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This project has received funding from the European
Union’s Seventh Framework Programme for research,
technological development and demonstration under
grant agreement no 612279
Accurate Simulations in Hydro-Machinery
and Marine Propellers (ACCUSIM)
Deliverable D.5.7: Dissemination – Final Report
Document identifier: ACCUSIM_Dissemination_FinalReport_D.5.7_v01.doc Preparation date: 29/01/2018
Version: 01 State: Final
Distribution: Public Issued : Aljaž Škerlavaj
Verified : Dragica Jošt Approved : Enrico Nobile
Call Identifier: FP7-PEOPLE-2013-IAPP Call Theme: Industry-Academia Partnerships and Pathways (IAPP)
Contract start date: 01/02/2014 Duration: 48 months
Project coordinator: Kolektor Turboinštitut Participating partner: University of Trieste
Project website: www.accusim.eu
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Document History Version Date Amended by Changes
01 29/01/2018 Aljaž Škerlavaj Document creation
Contributors Both partners contributed and agreed with the content of this deliverable, which is the property of the ACCUSIM consortium. This document may be copied and reproduced. It may not be modified neither whole nor partially for any purpose without written permission from the ACCUSIM project coordinator with acceptance of the Project Consortium.
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Executive Summary
During the 48 months of the project (between February 2014 and end of January 2018), many dissemination and outreach activities were performed. This report presents the final dissemination and outreach activities report, including the dissemination at conferences, workshops, software user's meetings, courses, dissemination in journals, outreach activities through direct communication channels and mass media. Papers from conferences, workshops or journals are included at the end of the report.
Note
In the email correspondence (13/03/2017) with Project Officer Olivier Delaunoy it was accepted that this deliverable can be created in month 48 instead of in month 40 of the project.
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Table of Contents
1 Introduction ..................................................................................................................................... 8
2 List of dissemination and outreach activities .................................................................................. 9
3 Short description of events ........................................................................................................... 12
3.1 Conference ‘Kuhljevi Dnevi’ (Kuhelj’s Days) – month M8 ..................................................... 12
3.2 Francis-99 Workshop – month M11 ...................................................................................... 12
3.3 Presentation at TI's Board of researchers by researcher R4 (Mitja Morgut) - month M12 .. 13
3.4 Seminar at UniTS by researcher R2 (Dragica Jošt) – month M15.......................................... 13
3.5 Tutorial for students at UniTS by researcher R1 (Aljaž Škerlavaj) – month M16 .................. 13
3.6 ANSYS conferences – months M15 and M16 ........................................................................ 13
3.7 Fourth International Symposium on Marine Propulsors, smp’15 – M16.............................. 14
3.8 NAFEMS World Congress 2015 – month M17 ....................................................................... 14
3.9 33rd UIT Heat Transfer Conference – month M18................................................................ 15
3.10 6th IAHR WG Meeting –month M20 ...................................................................................... 15
3.11 Regional conference ‘Kuhljevi Dnevi’ (Kuhelj’s Days) – month M20 .................................... 16
3.12 9th International Symposium on Cavitation, CAV 2015 – month M23 ................................. 16
3.13 Publication in Tecn‘è ............................................................................................................. 17
3.14 NAFEMS Seminar – month M26 ............................................................................................ 17
3.15 Presentation for students at UniTS by researcher R2 (Dragica Jošt) – month M28 ............. 17
3.16 Tutorial for students at UniTS by researcher R1 (Aljaž Škerlavaj) – month M28 .................. 18
3.17 modeFRONTIER User‘s Meeting 2016 – month M28 ............................................................ 18
3.18 ANSYS Convergence Conference – month M28 .................................................................... 18
3.19 34th UIT Heat Transfer Conference – month M30 ................................................................ 18
3.20 Academy of Mech. Engineering & 5th International Conference of Mech. Engineers –
month M33 ............................................................................................................................ 19
3.21 Presentation to undergraduate students of Faculty of Mech. Eng., UNIMB – month M33 . 19
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3.22 Presentation for Assoc. for Hydraulic Research (Društvo za hidravlične raziskave) – month
M35 ....................................................................................................................................... 20
3.23 Two presentations at the 7th IAHR WG conference – month M37 ...................................... 20
3.24 Presentation to undergraduate students of Faculty of Mech. Eng., UNIMB – month M38 . 21
3.25 Presentation to undergraduate students of Faculty of Mech. Eng., UNIMB, and Faculty of
Mech. Eng., UNILJ – month M38 ........................................................................................... 21
3.26 Presentation to PhD students of Faculty of Mech. Eng., UNILJ – month M40 ...................... 21
3.27 A tutorial for MSc Mech. Eng. students at UniTS – month M40 ........................................... 21
3.28 Presentations at the ERCOFTAC Design Optimization course – month M41 ........................ 22
3.29 ACCUSIM Summer School – month M44 .............................................................................. 22
3.30 Regional conference ‘Kuhljevi Dnevi’ (Kuhelj’s Days) – month M44 .................................... 22
3.31 Academy of Mech. Engineering 2017 & 6th Int. Conference of Mech. Engineers – month
M45 ....................................................................................................................................... 22
3.32 Presentation to undergraduate students of Faculty of Mech. Eng., UNIMB – month M46 . 23
3.33 Presentation to pupils of Strojna šola Velenje – month M47 ............................................... 23
3.34 Other activities ..................................................................................................................... 24
4 ACCUSIM Summer School ............................................................................................................. 26
4.1 Summer School poster and final program ............................................................................ 27
4.2 Pictures from the Summer school ......................................................................................... 29
4.3 Summer School Proceedings ................................................................................................. 32
5 List of publications ......................................................................................................................... 63
6 Conference and scientific journal papers (or published posters) ................................................. 67
6.1 Kuhljevi dnevi 2014 ............................................................................................................... 67
6.2 Francis-99 Workshop ............................................................................................................. 68
6.3 Symposium on Marine Propulsors – smp'15 (Paper No. 1) .................................................. 69
6.4 Symposium on Marine Propulsors – smp'15 (Paper No. 2) .................................................. 70
6.5 NAFEMS World Congress – NWC15 ...................................................................................... 71
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6.6 33rd UIT Heat Transfer Conference ...................................................................................... 72
6.7 IAHR WG 2015 (Paper No. 1) ................................................................................................. 73
6.8 IAHR WG 2015 (Paper No. 2) ................................................................................................. 74
6.9 IAHR WG 2015 (Paper No. 3) ................................................................................................. 75
6.10 Kuhljevi dnevi 2015 ............................................................................................................... 76
6.11 CAV2015 ................................................................................................................................ 77
6.12 34th UIT Heat Transfer Conference ...................................................................................... 78
6.13 Akademija strojništva 2016 ................................................................................................... 79
6.14 IAHR WG 2017 (Paper No. 1) ................................................................................................. 80
6.15 IAHR WG 2017 (Paper No. 2) ................................................................................................. 81
6.16 Kuhljevi dnevi 2017 ............................................................................................................... 82
6.17 Akademija strojništva 2017 ................................................................................................... 83
6.18 Strojniški vestnik (J. Mech. Eng) - article in press .................................................................. 84
7 Conclusions .................................................................................................................................... 85
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Abbreviations
CFD Computational Fluid Dynamics
mF modeFRONTIER© (optimization software)
KTI Kolektor Turboinštitut
UniTS University of Trieste
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1 Introduction
The ACCUSIM project aims to identify, develop and apply accurate, high-fidelity CFD approaches for
the numerical predictions of the unsteady, turbulent and possibly cavitating flow in hydraulic
turbines, pumps and marine propellers, and to develop advanced shape and functional optimization
strategies for the best design of these systems.
During the 48 months of the project (between February 2014 and end of January 2018), many dissemination and outreach activities were performed. This report presents the final dissemination report, including the dissemination at conferences, workshops, software user's meetings, courses, dissemination in journals, dissemination through other direct communication channels and dissemination in mass media. Papers from conferences, workshops or journals are included at the end of the report. This report is a combination of text from reports D.5.2 (Dissemination of Results at National and International Scientific Conferences and Workshops), D.5.3 (Dissemination of Results in Scientific Publications and Peer-Reviewed Scientific Journals) and D.5.4 (Dissemination of Results through Direct Communication).
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2 List of dissemination and outreach activities
The table below is a list of dissemination activities, where results of the ACCUSIM project were
presented, as well as the outreach activities, where more general topics were presented to public.
Month Activity
M8 Attendance at Slovenian regional conference ‘Kuhljevi Dnevi’ (Kuhelj’s Days, in memoriam
to prof. Kuhelj) (Maribor, Slovenia)
M11 Attendance at ‘Francis-99 Workshop’ (held at Luleå University of Technology)
M12 Presentation at Turboinštitut's board of researchers by researcher R4 (Mitja Morgut)
M15 Presentation (seminar) at Dept. Eng. Architecture, University of Trieste, by researcher R2
(Dragica Jošt): "Numerical flow simulation and performance prediction for water turbines",
16/04/2015
M15 Presentation at regional conference ‘ANSYS Conference & 10. CADFEM User’s Meeting‘
(Vienna, Austria, 29-30/04/2015)
M16 Presentation at regional conference ‘ANSYS User Group Meeting 2015, Italy’ (Bologna,
Italy, 14-15/05/2015)
M16 Tutorial for students of MSc Mechanical Engineering at the Dept. Eng. Architecture,
University of Trieste, by researcher R1 (Aljaž Škerlavaj): "CFD simulation of a simple
centrifugal pump", 25/05/2015.
M16 Presentation at regional conference ‘ANSYS Convergence Conference-2015, Slovenia’
(Ljubljana, Slovenia, 27/05/2015)
M16 Attended the ‘Fourth International Symposium on Marine Propulsors’ (Austin, Texas, USA,
31/05/2015-04/06/2015) with two papers
M17 Attended the ‘NAFEMS World Congress 2015‘ (San Diego, California, USA, 21-24/06/2015)
with one paper
M18 Attended the ‘33rd UIT Heat Transfer Conference‘ (L'Aquila, Italy, 22-24/06/2015) with one
paper
M20 Presented three papers at the international IAHRWG2015 meeting (6th IAHR Meeting of
the Working Group "Cavitation and Dynamic Problems"); Ljubljana, Slovenia, 09-
11/09/2015
M20 Presentation at the regional conference 'Kuhljevi dnevi 2015' (Moravske Toplice, Slovenia,
24-25/09/2015)
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M23 Presentation at the international conference ‘9th International Symposium on Cavitation -
CAV2015’ (Lausanne, Switzerland, 6-10/12/2015)
M26 Presentation at the NAFEMS Seminar ‘La Fluido-Dinamica Computazionale Nella
Simulazione Ingegneristica - Seminario di Sensibilizzazione’; Torino, Italy, 16/03/2016
M26 Publication in Tecn‘è, a popular technical monthly magazine
M28 Presentation about turbines - for students at UNITS (by Dragica Jošt, on 05/05/2016)
The title of the presentation: ”Recent improvements of performance prediction by CFD for
all types of water turbines”
M28 Preparation of written instructions and conducting a tutorial for M. Sc. Mech. Eng. students
at UNITS (by Aljaž Škerlavaj, on 09/05/2016)
M28 Presentation at ‘modeFRONTIER User‘s Meeting 2016’ (Trieste, 17-18/05/2016)
M28 Presentation at ‘ANSYS Convergence Conference’ (Ljubljana, 25/05/2016)
M29 Publication of movies on Youtube - observing cavitation in a centrifugal pump
M30 Presentation at the ‘34th UIT Heat Transfer Conference’ (Ferrara, Italy, 04-06/07/2016)
M33 Presentation of a poster at the Academy of Mech. Engineering & 5th International
Conference of Mechanical Engineers; Ljubljana, Slovenia, 18/10/2016;
Napoved kavitacije v vodnih turbinah z računalniško dinamiko tekočin – rezultati projekta
ACCUSIM (CFD Prediction of Cavitation in Water Turbines – results of the ACCUSIM project)
M33 Presentation to undergraduate students of Faculty of Mech. Eng., University of Maribor,
Slovenia (Turboinstitut, Ljubljana, 24/10/2016) (by Dragica Jošt and Aljaž Škerlavaj)
M35 Presentation for Association for Hydraulic Research (Društvo za hidravlične raziskave);
Ljubljana, Slovenia, 15/12/2016;
M. Morgut: Napoved kavitacije v vodnih turbinah in propelerjih z računalniško dinamiko
tekočin - rezultati projekta ACCUSIM (Predictions of cavitating flow in hydro-turbines and
marine propellers by CFD - results of ACCUSIM project)
M37 Two papers with presentations at IAHR WG meeting (Porto, PT, 1.-3./02/2017);
D. Jošt: Numerical Prediction of Cavitating Vortex Rope in a Draft Tube of a Francis Turbine
with Standard and Calibrated Cavitation Model
A. Škerlavaj: Decoupled CFD-based optimization of efficiency and cavitation performance
of a double-suction pump
M38 Dissemination for students of Faculty of Mech. Eng., University of Maribor (Jošt, Stopar,
KTI, 24/03/2017); Francis Turbines (1. CFD, 2. optimization of the runner cone)
M38 Dissemination for students of Faculty of Mech. Eng., University of Maribor, and for
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students of Faculty of Mech. Eng., University of Ljubljana (Stopar, KTI, 31/03/2017); Kaplan
Turbine - Introduction into Model Tests and Creation of the Hill Chart Diagram
M40 Dissemination for PhD students of Faculty of Mech. Eng., University of Ljubljana (Stopar,
Jošt, Škerlavaj, KTI, 10/05/2017); Hydraulic machinery, cavitation, optimization
M40 Dissemination for students of University of Trieste (Škerlavaj, UNITS, 15/05/2017); CFD
analysis of a pump - tutorial
M41 Two presentations at the ERCOFTAC Design Optimization course (UniTS, 05-07/06/2017) -
optimization of a pump; optimization of a runner cone extension
M44 Summer school of the ACCUSIM project (KTI, 25-27/09/2017)
M44 Presentation at "Kuhljevi dnevi" conference (Stopar; Dobrna, Slovenia, 28/09/2017)
M45 Acceptance of scientific paper in J. of Mechanical Engineering (Mitja Morgut, Dragica Jošt,
Aljaž Škerlavaj, Enrico Nobile, Giorgio Contento: Numerical Predictions of Cavitating Flow
Around a Marine Propeller and Kaplan Turbine Runner with Calibrated Cavitation Models,
DOI:10.5545/sv-jme.2017.4647)
M45 Presentation of a poster at the Academy of Mech. Engineering 2017 & 6th International
Conference of Mechanical Engineers; Ljubljana, Slovenia, 26/10/2017;
Napoved kavitacije v Peltonovi turbini in v centrifugalni črpalki (Prediction of Cavitation in a
Pelton Turbine and in a Centrifugal Pump)
M46 Dissemination for students of Faculty of Mech. Eng., University of Maribor, and for
Assistant Professor Elvis Žic from Faculty of Civil Engineering Rijeka, Croatia
(Jošt, Stopar, Škerlavaj, KTI, 12/11/2017); Hydraulic machinery, cavitation, presentation of
KTI's laboratory (with propeller model turbine in operation)
M47 Dissemination for pupils of Strojna šola Velenje (High School of Mechanical Engineering,
Velenje, Slovenia) (Škerlavaj, Krušec, KTI, 19/12/2017); hydraulic machines and CFD;
presentation of the KTI's laboratory
M48 Publication of movies on Youtube - flow patterns in Francis turbines
M48 40-minute interview about the ACCUSIM project for Italian national radio station RAI
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3 Short description of events
3.1 Conference ‘Kuhljevi Dnevi’ (Kuhelj’s Days) – month M8
In September 2014 (24-25/9/2014) a national annual conference 'Kuhljevi dnevi' was organized in
Maribor (Slovenia). The conference aims to disseminate state-of-the-art research from the field of
mechanical engineering and to promote the discussions to Slovenian researchers, students and
representatives of companies. The conference is held in memoriam to prof. Kuhelj and the official
conference language is Slovenian.
Researcher R4 (from UNITS), who was performing secondment at TI, was getting familiar with
numerical simulations of axial turbines. He attended the conference by presenting numerical
simulations of axial turbines to a Slovenian public. The study ‘Efficiency Prediction for a Low Head
Bulb Turbine with Numerical Flow Analysis’ was performed in collaboration by other researchers
from TI. The paper presented results obtained by different turbulence models and an effect of grid
density on results.
The activity can be classified into work packages WP1 and WP2, more specifically into tasks T.1.1.
(Usage of Open-Source CFD Software), T.2.2. (CFD Simulation of a Kaplan Turbine with Advanced
Turbulence Models).
3.2 Francis-99 Workshop – month M11
In December 2014 the first (of three) Francis-99 workshop was jointly organized by the Norwegian
University of Science and Technology (NTNU) and Luleå University of Technology (LTU) from Sweden.
The goal of the first workshop was to determine the state of the art of high head Francis turbine
simulations (flow and structure) under steady operating conditions, as well as to promote
development of such simulations openly.
Both partners of the ACCUSIM project published and presented a paper in which simulations
performed with commercial software ANSYS CFX and with open-source software OpenFOAM were
compared to experimental measurements. One of the conclusions was that results drastically
improved by using our own computational meshes instead of the ones provided by organizers of the
conference. In particular, the provided meshes were insufficiently refined near the blades. Two
researchers attended the conference, R1 and R4, so they could exchange their experiences on
different topics. The study by the team of the ACCUSIM project was one of the most comprehensive
studies presented at the workshop.
The activities can be classified into work packages WP1 and WP2. Due to an interaction among
researchers there was a transfer of knowledge in both directions. Researchers from TI were learning
about the usage of OpenFOAM software (Task T.1.1 - Usage of Open-Source CFD Software).
Researcher R4 is learning about simulations of Francis turbines (Task T.2.1 - CFD Simulation of a
Francis Turbine with Advanced Turbulence Models).
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3.3 Presentation at TI's Board of researchers by researcher R4 (Mitja Morgut) -
month M12
On 9th January 2015 researcher R4 presented his research to the Board of researchers of
Turboinštitut. The title of the presentation was 'Research project ACCUSIM from origin to
realization'. In the presentation he showed his research work on cavitation modelling, with emphasis
on the usage of genetic optimization algorithm and open source solver OpenFOAM.
The activity can be classified into work packages WP1 (Transfer of knowledge to TI) as well as the
WP5 (Dissemination, Outreach Activities and Exploitation).
3.4 Seminar at UniTS by researcher R2 (Dragica Jošt) – month M15
On 16/04/2015 researcher R2 (Dragica Jošt) presented her research work to MSc and Ph.D. students,
as well as faculty members, of the Dept. of Architecture and Engineering of the University of Trieste
(a signed list of attendees is available upon request). The title of the presentation was 'Numerical
flow simulation and performance prediction for water turbines'. In the presentation she showed her
research work related to all types of water turbines, as well as a historical overview of such
simulations. The presentation was particularly appreciated, for its clarity and innovative nature of the
methods used, by both students and faculty.
The activity can be classified into work packages WP2 (Transfer of knowledge to UniTS) as well as the
WP5 (Dissemination, Outreach Activities and Exploitation).
3.5 Tutorial for students at UniTS by researcher R1 (Aljaž Škerlavaj) – month M16
On 25/05/2015 researcher R1 (Aljaž Škerlavaj) presented a 3-hours tutorial to the students of CFD
course (Termofluidodinamica Computazionale) of MSc in Mechanical Engineering. The title of the
presentation was "CFD simulation of a simple centrifugal pump". The goal was to teach the students
how to perform such non-trivial simulations. The students followed the course by working on their
computers in a computerized classroom. The tutorial was attended with enthusiasm and genuine
participation by the students, since they not only had the chance to attend - and work hands-on - on
this tutorial, but also had the opportunity to take advantage of the competence and experience of
the teacher in the simulation of turbomachines. The tutorial is available for students at the webpage
moodle2.units.it.
The activity can be classified into work packages WP2 (Transfer of knowledge to UniTS) as well as the
WP5 (Dissemination, Outreach Activities and Exploitation).
3.6 ANSYS conferences – months M15 and M16
The state-of-the-art simulations and recent findings were presented at three regional conferences of
the software provider ANSYS: in Austria, Italy and Slovenia. People from different technical branches
attend such conferences, so it was a good chance to present the ACCUSIM project to wider audience
and for networking. The following presentations were given:
- "Recent improvements of performance prediction by CFD for all types of water turbines"
(ANSYS Austria, Vienna, 29-30/04/2015) (Presentation only),
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- "Transient numerical simulations of flow in water turbines and marine propeller with
advanced turbulence models" (ANSYS Italy, Bologna, 14-15/05/2015) (Presentation +
manuscript, which was not published) and
- "Improvement of efficiency prediction for axial turbines with advanced turbulence models"
(ANSYS Slovenia, Ljubljana, 27/05/2015) (Presentation only).
The activity can be classified into work packages WP1 and WP2, more specifically into tasks T.1.1.
(Usage of Open-Source CFD Software), T.1.2. (Cavitation Modelling), T.1.3 (Usage of Optimization
Algorithms and Optimization Software), T.2.1. (CFD Simulation of a Francis Turbine with Advanced
Turbulence Models) and T.2.2. (CFD Simulation of a Kaplan Turbine with Advanced Turbulence
Models).
3.7 Fourth International Symposium on Marine Propulsors, smp’15 – M16
In May/June 2015 (31/05/2015–04/06/2015) the fourth International Symposium on Marine
Propulsors was organized (http://www.caee.utexas.edu/smp15/). The symposium is dedicated to
marine propulsors and ocean current or tidal turbines. At the last day of the symposium a workshop
on cavitating propeller performance was held, with emphasis on comparison of numerical
simulations of propeller cavitation and propeller induced hull pressures to experiments (a blind test
case).
Researchers R1 and R2 (from TI) were getting familiar with state-of-the-art research of cavitation on
marine propellers and with OpenFOAM solver, whereas researcher R4 improved his knowledge
regarding the advanced turbulence models. Two papers were submitted:
- "Numerical investigations of a cavitating propeller in non-uniform inflow" and
- "Numerical predictions of the PPTC model propeller in oblique flow"
The results were obtained by different turbulence models, with two different solvers (ANSYS CFX and
OpenFOAM) and three mass transfer models. Computationally intensive numerical simulations were
performed. The ACCUSIM's qualitative predictions results of the blind test case were almost perfect,
and among the best of the participating groups.
The activities can be classified into work packages WP1, WP2 and WP3. There was a transfer of
knowledge to researchers from TI (task T.1.1. Usage of Open-Source CFD Software and task T.1.2.
Cavitation Modelling), as well as transfer of knowledge to researcher from UniTS (task T.2.1. CFD
Simulation of a Francis Turbine with Advanced Turbulence Models). Regarding testing the initial
cavitation extent with the optimized cavitation model, this task is related with T.3.1. Initial Cavitation
in Hydro-Machinery – Calibration of Cavitation Model for RANS Simulations. The evaluation of the
effect of advanced turbulence models on prediction with cavitation model is related to task T.3.2.
Efficiency and Cavitation Prediction in Hydraulic Machinery (Simulations with Advanced Turbulence
Models).
3.8 NAFEMS World Congress 2015 – month M17
In June 2015 (21-24/06/2015) a NAFEMS World Congress 2015 was organized in San Diego, CA. The
congress is a general (non-specialized) conference for numerical simulation and CAE (computer Aided
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Engineering), with the purpose to exchange experience between different branches of engineering. It
is particularly focused upon industrial applications.
At the NAFEMS congress we presented the main results of the simulations of bulb water turbine.
More specifically, a research with two CFD solvers (ANSYS CFX and OpenFOAM) was performed, with
two approaches for turbulence modelling. The first approach was a steady-state simulation
approach, the second one a time consuming approach with advanced turbulence models (with
transient simulations). In the latter case, the effect of grid refinement of various turbine parts on
turbine efficiency, torque and mass flow rate was studied. Numerical results were compared to
experimental results.
The activities can be classified into work packages WP1 and WP2. There was a transfer of knowledge
to researchers from TI (T.1.1. Usage of Open-Source CFD Software), as well as transfer of knowledge
to a researcher from UniTS (T.2.2. CFD Simulation of a Kaplan Turbine with Advanced Turbulence
Models).
3.9 33rd UIT Heat Transfer Conference – month M18
In June 2015 (22-24/06/2015) a conference was organized in L'Aquila (Italy). As presented on the
conference's webpage, the conference "promotes cooperation in the thermal science and heat
transfer by bringing together scientists, researchers, those in industry, laboratories as well as
students to network, learn more and share their knowledge". The paper "Numerical investigation of
the flow in axial water turbines and marine propellers with scale-resolving simulations" was
presented at the conference. The paper has been selected, among the best papers, as eligible to be
published on the IOP Conference series on-line journal.
The activities can be classified into work packages WP1, WP2 and WP3, more specifically into tasks
T.1.1. (Usage of Open-Source CFD Software), T.1.2. (Cavitation Modelling), T.2.2. (CFD Simulation of a
Kaplan Turbine with Advanced Turbulence Models), T.3.1. (Initial Cavitation in Hydro Machinery -
Calibration of Cavitation Model for RANS Simulations), T.3.2. (Efficiency and Cavitation Prediction in
Hydraulic Machinery - Simulations with Advanced Turbulence Models).
3.10 6th IAHR WG Meeting –month M20
In September 2015 (24-25/9/2015) a biannual international IAHR working group conference for
hydraulic machinery was organized in Ljubljana (Slovenia). The IAHR WG meeting is primarily
intended for researchers from Europe, but usually also researchers from the other parts of the world
attend the meeting as well. After a long time the meeting was organized in Ljubljana, a location
particularly convenient to attend the meeting.
Three manuscripts were submitted by the ACCUSIM team:
- "Cavitation Prediction in a Kaplan Turbine Using Standard and Optimized Model Parameters",
- "Numerical Analysis of the Flow Non-uniformity Generated by Symmetrical Suction Elbows of
the Large Storage Pumps" and
- "Experimental Observations and Numerical Simulations of a Free-Surface Vortex in a Test
Vessel".
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The second manuscript is a result of the networking of researcher R1 at the IAHR conference in
Montreal (in 2014). The manuscript is a result of two similar cases (by two researchers), combined
into one paper. The third paper was created from previous activity of researcher R1.
The activity can be classified into work packages WP1, WP2 and WP3, more specifically into tasks
T.1.1. (Usage of Open-Source CFD Software), T.1.2. (Cavitation Modelling), T.2.2. (CFD Simulation of a
Kaplan Turbine with Advanced Turbulence Models), T.3.1. (Initial Cavitation in Hydro Machinery -
Calibration of Cavitation Model for RANS Simulations), T.3.2. (Efficiency and Cavitation Prediction in
Hydraulic Machinery - Simulations with Advanced Turbulence Models).
3.11 Regional conference ‘Kuhljevi Dnevi’ (Kuhelj’s Days) – month M20 In September 2015 (24-25/9/2015) a regional annual conference 'Kuhljevi dnevi' was organized in
Maribor (Slovenia). The conference aims to disseminate state-of-the-art research from the field of
mechanical engineering and to promote the discussions to Slovenian researchers, students and
representatives of companies. The conference is held in memoriam to prof. Kuhelj and the official
conference language is Slovenian.
The study "Effect of Losses in Labyrinth Seals on Efficiency of a High Head Francis Turbine" was
presented at the conference. The study is an extract from the results presented at the Workshop
Francis-99 (Trondheim, Norway, 2015), and was aimed at the Slovenian-spoken researchers from
different fields of research.
The activities can be classified into the same work packages/tasks as in the case of Francis-99
Workshop: Task T.1.1 (Usage of Open-Source CFD Software) and Task T.2.1 (CFD Simulation of a
Francis Turbine with Advanced Turbulence Models).
3.12 9th International Symposium on Cavitation, CAV 2015 – month M23
In December 2015 (06–10/12/2015) the 9th International Symposium on Cavitation was organized in
Lausanne, Switzerland. An emphasis of this high-valued symposium is on basic cavitation research
(either numerical or experimental), and is organized in 3-years intervals. Researchers and engineers
that were present at the meeting, came from a wide spectrum of fields, such as hydro-machinery,
naval engineering, medicine, fuel systems, developers of numerical methods etc.
The manuscript "Numerical predictions of the turbulent cavitating flow around a marine propeller
and an axial turbine" presents results of the simulation of cavitating flow in an axial turbine,
comparing two sets of cavitation models (default and optimized one).
The activities can be classified into the work packages WP1, WP2 and WP3: Task T.1.1 (Usage of
Open-Source CFD Software), Task T.1.2. (Cavitation Modelling), Task T.2.2 (CFD Simulation of a
Kaplan Turbine with Advanced Turbulence Models), Task T.3.1. (Initial Cavitation in Hydro Machinery
- Calibration of Cavitation Model for RANS Simulations) and Task T.3.2. (Efficiency and Cavitation
Prediction in Hydraulic Machinery - Simulations with Advanced Turbulence Models).
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3.13 Publication in Tecn‘è
Usefulness of CFD simulations and optimization techniques was presented to the Italian technical
community at large - in March 2016 (M26), the article "Termofluidodinamica computazionale" was
published (in print and online) in Tecn‘è, a popular Italian technical monthly magazine (Tecnè, Vol.
6(3), pp.142-146). The article is available at:
- http://www.tecnelab.it/tecne3-6_sfogliabile/tecne3_6.pdf and
- http://www.tecnelab.it/index.asp?idCategoria=4&idSottoCategoria=19&idsottopagina=7216
The activity can be classified into work package WP5 (Dissemination, Outreach Activities and
Exploitation).
3.14 NAFEMS Seminar – month M26
In March 2016 (16/03/2016) the NAFEMS (International Association for the Engineering Modelling,
Analysis and Simulation Community) organized a seminar entitled ‘La Fluido-Dinamica
Computazionale Nella Simulazione Ingegneristica - Seminario di Sensibilizzazione’. The seminar,
organized in Torino, Italy, was of regional type with broad audience (i.e., researchers from various
fields, but in particular engineers from industry directly involved in CAE/CFD). The presentation
“Numerical predictions of the performances of hydraulic turbines and marine propellers” presented
ACCUSIM project's results in regards with the Francis and Kaplan turbines, as well as in regards with
the optimization of the centrifugal pump. For complete presentation of hydraulic machines, the
presentation included also a Pelton turbine simulation, as well as a simulation of the propeller.
The presented paper is an overview of many ACCUSIM project's results, so the activity can be
classified into many transfer-of-knowledge (ToK) and research-related work packages: WP1, WP2,
WP3 and WP4. More specifically, the following tasks are associated with this activity: T.1.1. (Usage of
Open-Source CFD Software), T.1.2. (Cavitation Modelling), T.1.3. (Usage of Optimization Algorithms
and Optimization Software), T.2.1. (CFD Simulation of a Francis Turbine with Advanced Turbulence
Models), T.2.2. (CFD Simulation of a Kaplan Turbine with Advanced Turbulence Models), T.3.1. (Initial
Cavitation in Hydro Machinery - Calibration of Cavitation Model for RANS Simulations), T.3.2.
(Efficiency and Cavitation Prediction in Hydraulic Machinery - Simulations with Advanced Turbulence
Models) and T.4.1 (Shape Optimization).
3.15 Presentation for students at UniTS by researcher R2 (Dragica Jošt) – month
M28
In May 2016 (05/05/2016) Dragica Jošt presented some resent numerical results to the students of
UNITS. The title of the presentation was “Recent improvements of performance prediction by CFD
for all types of water turbines”. The presentation was focused on improvement of efficiency and
cavitation prediction with transient simulations using advanced turbulence models (SAS SST, zonal
LES). The results of the Francis'99 workshop and resent results for the axial turbines were included in
the presentation. Also results for Pelton turbines obtained with free surface model were presented.
The activity can be classified into work packages WP2 (Transfer of knowledge to UniTS) as well as the
WP5 (Dissemination, Outreach Activities and Exploitation).
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3.16 Tutorial for students at UniTS by researcher R1 (Aljaž Škerlavaj) – month M28
On 09/05/2016 Aljaž Škerlavaj conducted a tutorial for M. Sc. Mech. Eng. students at UNITS about
numerical simulation of a pump, for which he also prepared written instructions (which form a part
of this deliverable). The tutorial is available for students at the webpage moodle2.units.it.
The activity can be classified into work packages WP2 (Transfer of knowledge to UniTS) as well as the
WP5 (Dissemination, Outreach Activities and Exploitation).
3.17 modeFRONTIER User‘s Meeting 2016 – month M28
The modeFRONTIER software is a software tool for optimization, which is used in the ACCUSIM
project. In May 2016 (17-18/05/2016) an international user's meeting was organized in Trieste (Italy).
All four researchers, performing secondments during the ACCUSIM project, were present at the
meeting. Researcher Aljaž Škerlavaj presented his results about optimization of the centrifugal pump
("Optimization of a single-stage double-suction centrifugal pump using different Response Surface
methods"). The feedback was positive - there was an interesting suggestion from the public, which
was tested at a later time. The meeting was a good chance to learn about the capabilities of the
modeFRONTIER software on real cases. On 19/05/2016 the researchers attended the training
courses.
The described activities belong to work package WP1 (Transfer of Knowledge to TI) - task T.1.3
(Usage of Optimization Algorithms and Optimization Software), as well as to WP4 (Optimization) -
task T.4.1 (Shape Optimization).
3.18 ANSYS Convergence Conference – month M28
The state-of-the-art simulations and recent findings were presented at the regional conference of the
software provider ANSYS in Slovenia. People from different technical branches attend such
conferences, so it was a good chance to present the ACCUSIM project to a wider audience and for
networking. Dragica Jošt presented numerical results of cavitation in Francis turbine ("Numerical
simulation of different forms of cavitation in Francis turbines").
The activity can be classified into the following ToK/research-related work packages: WP1 (Transfer
of Knowledge to TI), WP2 (Transfer of Knowledge to UNITS) and WP3 (Energetic and Cavitation
Characteristics. More specifically, the following tasks are associated with this activity: T.1.2.
(Cavitation Modelling), T.2.1. (CFD Simulation of a Francis Turbine with Advanced Turbulence
Models), T.3.1. (Initial Cavitation in Hydro Machinery - Calibration of Cavitation Model for RANS
Simulations), T.3.2 (Efficiency and Cavitation Prediction in Hydraulic Machinery (Simulations with
Advanced Turbulence Models)) and T.3.5. (Prediction of Cavitating Vortex Rope in Francis Turbines).
3.19 34th UIT Heat Transfer Conference – month M30
In July 2016 (04-06/07/2016) a conference was organized in Ferrara (Italy). As presented on the
conference's webpage, the conference "promotes cooperation in the thermal science and heat
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transfer by bringing together scientists, researchers, those in industry, laboratories as well as
students to network, learn more and share their knowledge". The paper "Optimization of a single-
stage double-suction centrifugal pump" was presented at the conference. After the review process,
the paper has been selected as eligible to be published on the IOP Conference series on-line journal.
The described activities belong to work package WP1 (Transfer of Knowledge to TI) - task T.1.3
(Usage of Optimization Algorithms and Optimization Software), as well as to WP4 (Optimization) -
task T.4.1 (Shape Optimization).
3.20 Academy of Mech. Engineering & 5th International Conference of Mech.
Engineers – month M33 The event was held in Cankarjev dom (the "house of culture"), Ljubljana, on 18/10/2016. The goal of
the event is to stimulate a closer cooperation between industrial and academic spheres of
mechanical engineering. At the event, lifetime awards and awards for the recognition of Slovenian
companies abroad were granted, which was later followed by the presentation of the posters and
social evening. Dragica Jošt and Aljaž Škerlavaj attended the event and presented the ACCUSIM
project with the poster entitled Napoved kavitacije v vodnih turbinah z računalniško dinamiko tekočin
– rezultati projekta ACCUSIM (CFD Prediction of Cavitation in Water Turbines – results of the
ACCUSIM project). The poster is available also online at http://www.zveza-
zsis.si/content/svet_strojnistva/svet_strojnistva_okt16.pdf, page 41.
The presented poster is an overview of many ACCUSIM project's results, so the activity can be
classified into many transfer-of-knowledge (ToK) and research-related work packages: WP1, WP2 and
WP3. More specifically, the following tasks are associated with this activity: T.1.2. (Cavitation
Modelling), T.2.1. (CFD Simulation of a Francis Turbine with Advanced Turbulence Models), T.2.2.
(CFD Simulation of a Kaplan Turbine with Advanced Turbulence Models), T.3.1. (Initial Cavitation in
Hydro Machinery - Calibration of Cavitation Model for RANS Simulations), T.3.2. (Efficiency and
Cavitation Prediction in Hydraulic Machinery - Simulations with Advanced Turbulence Models), T.3.3
(Reliable Prediction of Cloud Cavitation on Hydrofoil) and T.3.5 (Prediction of Cavitating Vortex Rope
in Francis Turbines).
3.21 Presentation to undergraduate students of Faculty of Mech. Eng., UNIMB –
month M33
On 24/10/2016 the undergraduate students from Faculty of Mech. Engineering, University of
Maribor, Slovenia, visited Kolektor Turboinstitut. Dragica Jošt and Aljaž Škerlavaj gave short lectures
about the ACCUSIM project, and water turbines and pumps in general. The students were satisfied
with the visit of Kolektor Turboinstitut.
The activity can be classified into work package WP5 (Dissemination, Outreach Activities and
Exploitation).
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3.22 Presentation for Assoc. for Hydraulic Research (Društvo za hidravlične
raziskave) – month M35
On 15/12/2016 Mitja Morgut presented recent achievements of the ACCUSIM project in regards with
the cavitation modelling. The English title of the presentation was Predictions of cavitating flow in
hydro-turbines and marine propellers by CFD - results of ACCUSIM project. The presentation was
given to the volunteering association, the Association for Hydraulic Research, which unites various
engineers. The goal is to follow, as well as to stimulate, professional and scientific hydraulic research
from the field of civil, mechanical and environmental engineering. Up to two presentations are given
each year. The presentation was very interesting, so the ACCUSIM project was invited to try to
participate in the special issue of the Journal of Mechanical Engineering, by sending a manuscript in
March 2017.
The presentation can be classified into the following transfer-of-knowledge (ToK) and research-
related work packages: WP1, WP2 and WP3. More specifically, the following tasks are associated
with this activity: T.1.2. (Cavitation Modelling), T.2.2. (CFD Simulation of a Kaplan Turbine with
Advanced Turbulence Models) and T.3.2. (Efficiency and Cavitation Prediction in Hydraulic Machinery
- Simulations with Advanced Turbulence Models).
3.23 Two presentations at the 7th IAHR WG conference – month M37
The IAHR conference is the most important conference for the scientific and research-related
community for hydraulic turbomachinery. This year, the meeting was organized jointly with the
HYPERBOLE EU project conference in Porto, Portugal, on 1-3/2/2017 (month M37). Dragica Jošt
presented the paper Numerical Prediction of Cavitating Vortex Rope in a Draft Tube of a Francis
Turbine with Standard and Calibrated Cavitation Model, which turned out to be completely in-line
with the topics of the conference. Aljaž Škerlavaj presented the paper Decoupled CFD-based
optimization of efficiency and cavitation performance of a double-suction pump. Both papers drew
others attention. As well, the researchers got acquainted with the new trends of hydraulic turbine
operation, which may cause a lot of damage to turbines in the (near) future.
For the first paper, the activities can be classified into the following transfer-of-knowledge (ToK) and
research-related work packages: WP1, WP2 and WP3. More specifically, the following tasks are
associated with this activity: T.1.2. (Cavitation Modelling), T.2.1. (CFD Simulation of a Francis Turbine
with Advanced Turbulence Models) and T.3.5 (Prediction of Cavitating Vortex Rope in Francis
Turbines).
For the second paper, the activities can be classified into the following transfer-of-knowledge (ToK)
and research-related work packages: WP1 and WP4. More specifically, the following tasks are
associated with this activity: T.1.3 (Usage of Optimization Algorithms and Optimization Software) and
T.4.1. (Shape Optimization).
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3.24 Presentation to undergraduate students of Faculty of Mech. Eng., UNIMB –
month M38
On 24/03/2017 the undergraduate students from Faculty of Mech. Engineering, University of
Maribor, Slovenia, visited Kolektor Turboinstitut during the Turboinštitut's "Board of researchers"
meeting. Dragica Jošt and Roberto Renato Stopar gave two lectures about numerical analyses of
Francis turbines and about optimization:
1. Numerical flow analysis with efficiency and cavitation prediction for the Francis turbine
2. Optimization of the runner cone extension in Francis turbines
The students received general information about Francis turbines and were introduced into
possibilities of CFD simulations, related to Francis turbines. KTI's laboratory and production line of
small turbines was presented to the students.
The activity can be classified into work package WP5 (Dissemination, Outreach Activities and
Exploitation).
3.25 Presentation to undergraduate students of Faculty of Mech. Eng., UNIMB, and
Faculty of Mech. Eng., UNILJ – month M38
On 31/03/2017 another group of undergraduate students from Faculty of Mech. Engineering,
University of Maribor, Slovenia, and from Faculty of Mech. Engineering, University of Ljubljana,
Slovenia, visited Kolektor Turboinstitut. Roberto Renato Stopar gave a lecture about Kaplan turbines
and also presented a model of the Kaplan turbine in KTI's laboratory. Besides the KTI's laboratory, the
production of small turbines was presented to students.
The activity can be classified into work package WP5 (Dissemination, Outreach Activities and
Exploitation).
3.26 Presentation to PhD students of Faculty of Mech. Eng., UNILJ – month M40 On 10/05/2017 the PhD students from Faculty of Mech. Engineering, University of Ljubljana,
Slovenia, visited Kolektor Turboinstitut. Roberto Renato Stopar, Dragica Jošt and Aljaž Škerlavaj gave
lectures about hydraulic machines, cavitation and optimization. KTI's laboratory and production of
small turbines was presented to students.
The activity can be classified into work package WP5 (Dissemination, Outreach Activities and
Exploitation).
3.27 A tutorial for MSc Mech. Eng. students at UniTS – month M40
On 15/05/2017 Aljaž Škerlavaj conducted a tutorial for M. Sc. Mech. Eng. students at UniTS about
numerical simulation of a pump. The aim was to show how to create a mesh and how to set up the
simulation. In the end, the results were compared to available experimental results.
The activity can be classified into work package WP5 (Dissemination, Outreach Activities and
Exploitation).
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3.28 Presentations at the ERCOFTAC Design Optimization course – month M41
The ERCOFTAC's (European Research Community on Flow, Turbulence and Combustion) course on
design optimization <http://www.ercoftac.org/events/design_optimization_2017/> was organized at
University of Trieste on 05-07/06/2017. The ACCUSIM project was involved by presenting two
studies:
1. Optimization of a double-sided centrifugal pump (A. Škerlavaj)
2. Multiobjective optimization of the Francis turbine runner cone (R.R. Stopar).
Both studies were presented by A. Škerlavaj on 06/06/2017.
The presentations can be classified into the following transfer-of-knowledge (ToK) and research-
related work packages: WP1, task T.1.3. (Usage of Optimization Algorithms and Optimization
Software), and WP4, tasks T.4.1 and T.4.2 (Shape optimization 1 and 2).
3.29 ACCUSIM Summer School – month M44
During the 25-27/09/2017, the ACCUSIM project summer school was organized at Kolektor
Turboinštitut. More about the summer school is presented in the next section.
The activity can be classified into work package WP5 (Dissemination, Outreach Activities and
Exploitation).
3.30 Regional conference ‘Kuhljevi Dnevi’ (Kuhelj’s Days) – month M44
In September 2017 (28-29/9/2017) a regional annual conference 'Kuhljevi dnevi' was organized in
Dobrna (Slovenia). The conference aims to disseminate state-of-the-art research from the field of
mechanical engineering and to promote the discussions to Slovenian researchers, students and
representatives of companies. The conference is held in memoriam to prof. Kuhelj and the official
conference language is Slovenian.
The study "Večkriterijska optimizacija hidravlične oblike cilindričnega podaljška rotorja Francisove
turbine" (Multiobjective optimization of a hydraulic shape of runner cone extension in Francis turbine)
was presented at the conference. The study presents a multi-objective optimization of the runner
cone extension, aimed at reducing pressure losses in the draft tube at best efficiency operating point
and at maximal discharge one. The study is aimed at the Slovenian-spoken researchers from different
fields of research.
The activities can be classified into the work packages/tasks: Task T.1.3 (Usage of Optimization
Algorithms and Optimization Software) and Task T.4.1 (Shape Optimization).
3.31 Academy of Mech. Engineering 2017 & 6th Int. Conference of Mech. Engineers
– month M45 The event was held in Cankarjev dom (the "house of culture"), Ljubljana, on 26/10/2017. The goal of
the event is to stimulate a closer cooperation between industrial and academic components of
mechanical engineering. At the event, lifetime awards and awards for the recognition of Slovenian
companies abroad were granted, which was later followed by the presentation of the posters and
social evening. Dragica Jošt and Mitja Morgut attended the event and presented the ACCUSIM
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project with the poster entitled Napoved kavitacije v Peltonovi turbini in v centrifugalni črpalki
(Prediction of Cavitation in a Pelton Turbine and in a Centrifugal Pump). The poster is available also
online at http://www.zveza-zsis.si/content/svet_strojnistva/svet_strojnistva_sep_okt17.pdf, page 74.
The presented poster represents the extract of the latest results of the ACCUSIM project, which have
not been published elsewhere yet. Default and calibrated mass transfer models were tested for
prediction of sheet cavitation in a Pelton turbine and of cloud cavitation in a centrifugal pump.
The activity can be classified into transfer-of-knowledge (ToK) work package WP1 and research-
related work package WP3. More specifically, the following tasks are associated with this activity:
T.1.2. (Cavitation Modelling), T.3.1. (Initial Cavitation in Hydro Machinery - Calibration of Cavitation
Model for RANS Simulations), T.3.2. (Efficiency and Cavitation Prediction in Hydraulic Machinery -
Simulations with Advanced Turbulence Models) and T.3.3 (Reliable Prediction of Cloud Cavitation on
Hydrofoil).
3.32 Presentation to undergraduate students of Faculty of Mech. Eng., UNIMB –
month M46
On 12/11/2017 a group of undergraduate students from Faculty of Mech. Engineering, University of
Maribor, Slovenia, visited Kolektor Turboinstitut. Dragica Jošt gave a presentation about hydraulic
turbines and CFD. Afterwards, Roberto Renato Stopar and Aljaž Škerlavaj presented laboratory to the
students, with emphasis on the cavitation observation on the propeller-type turbine model.
The activity can be classified into work package WP5 (Dissemination, Outreach Activities and
Exploitation).
Students in the KTI's laboratory - observation of
the flow in the propeller turbine.
3.33 Presentation to pupils of Strojna šola Velenje – month M47
On 19/12/2017 large group of pupils (40) from Strojna šola Velenje (High School of Mechanical
Engineering, Velenje, Slovenia), visited Kolektor Turboinstitut. Due to the large number of pupils the
group was split in two, the other one arriving when the first one was finished.
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Aljaž Škerlavaj had a presentation about different types of hydraulic turbines, as well as about the
possibilities of CFD for simulations of the turbines. Matjaž Krušec presented the KTI's laboratory for
water turbine model testing.
The activity can be classified into work package WP5 (Dissemination, Outreach Activities and
Exploitation).
The second group of pupils in the KTI's laboratory.
3.34 Other activities
Besides the activities presented above, other dissemination and outreach activities were performed.
For instance, a very important mass media channel was digital media, represented by the ACCUSIM's
webpage (http://www.accusim.eu/) and supported by YouTube videos, Twitter
(https://twitter.com/AccusimEu) and Facebook (https://www.facebook.com/accusim.eu) accounts.
The videos that were uploaded to YouTube (and linked from the webpage) allow for a valuable and
rare opportunity of insight into cavitating flow in a centrifugal pump. Some videos were taken at a
test rig in Kolektor Turboinstitut, some were the result of CFD simulations. The videos were post-
processed to include necessary explanations or data.
A short news about the ACCUSIM project approaching the end, as well as with the link to our
webpage and a statement about future collaboration of the partners, was presented at the Water
Power & Dam Construction webpage (http://www.waterpowermagazine.com/news/
newscollaboration-to-continue-as-research-project-comes-to-an-end-6042535), as well as in their
newsletter.
Besides the videos, the webpage includes a detailed step-by-step tutorial that shows how to create
structured and unstructured meshes in ANSYS CFX, in this particular case for a simple pump. The
tutorial consists of a PDF file and three geometry files.
The media that was also not mentioned above was broadcast media, in frame of which a 40-minute
interview with Aljaž Škerlavaj was done for the Radio RAI in January 2018. Link:
http://www.rai.it/dl/portali/site/articolo/ContentItem-99a019aa-ca1e-4865-b5e0-
bc047ac1bab4.html#
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Webpage www.accusim.eu.
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4 ACCUSIM Summer School
During the 25-27/09/2017, the ACCUSIM project summer school was organized at Kolektor
Turboinštitut. 36 registered participants attended the summer school not including four invited
lecturers (prof. Jure Ravnik from University of Maribor, prof. Matevž Dular, University of Ljubljana,
Maja Ondracka - private company, prof. Carlo Poloni from University of Trieste) and six lecturers
(Jošt, Škerlavaj, Morgut, Stopar, Nobile, Pavlin) who were part of the ACCUSIM project.
Nine registered participants came from University of Trieste (graduate students and PhD students),
five from University in Maribor, Faculty of Mech. Eng. (2 graduate students, 2 PhD students and one
professor), nine from University of Ljubljana (students and one PhD researcher), 11 from other
companies (also from competitive ones) and two from Kolektor Turboinštitut. Five unregistered
participants attended some of the lectures (four from KTI and one from University of Ljubljana,
Faculty of Civil and Geodetic Engineering).
The scope of the school was to share and disseminate the knowledge and expertise, gained in the
Marie-Curie European project ACCUSIM, about the application of:
Advanced (scale-resolving) turbulence models,
OpenFOAM,
Cavitation modelling and
Design optimization
in hydraulic machines and marine propellers. Invited lecturers were also covering the four aspects of
the scope. A short resume of each presentation was included in published proceedings of the
summer school:
Accurate simulations in hydro-machinery and marine propellers : proceedings of ACCUSIM Summer
School Conference 25th - 27th September 2017, Ljubljana / [editors Dragica Jošt, Aljaž Škerlavaj]. -
Ljubljana : Kolektor Turboinštitut, 2017, ISBN 978-961-285-877-3. (The proceedings form a part of
this deliverable.)
KTI's laboratory and production of small turbines was presented to everyone interested. For those,
who were not interested to see the KTI’s laboratory, Pre and Post-processing for numerical
simulations of water turbines were presented.
All participants received printed proceedings, advertising material, a sketchbook and a pen. At the
end, the participants received the certificate of attendance.
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4.1 Summer School poster and final program
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4.2 Pictures from the Summer school
Summer school participants
A. Škerlavaj: Opening with a short presentation
of the ACCUSIM project
A. Škerlavaj: Opening with a short presentation
of the ACCUSIM project
B. Črv: Welcome speech and presentation of
Kolektor Turboinštitut
E. Nobile: Presentation of Fisica Tecnica (Thermal
Fluids) at the Dept. of Architecture and
Engineering of the University of Trieste
Jure Ravnik, University of Maribor: Turbulence
modelling
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M. Ondračka: Introduction to OpenFOAM
M. Dular, University of Ljubljana: Advanced
experimental and numerical techniques for
cavitation erosion prediction
M. Morgut: Calibration of mass transfer models
for the numerical prediction of sheet cavitation
around a hydrofoil
D. Jošt: Cavitation prediction for water turbines
C. Poloni, ESTECO: No-free lunch theorem from
an engineering perspective
R. Pavlin, KTI: Pump types and hydraulic design
approach
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A. Škerlavaj: Optimization of a double-sided
centrifugal pump
R. R. Stopar: Multi-objective optimization of the
Francis turbine runner cone
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4.3 Summer School Proceedings
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5 List of publications The following table is a list of all publications (or presentations). The right-hand side column indicates
the level of dissemination event (national, regional or international), type of the event (conference,
workshop, etc.), as well as the typical audience (general engineers, mechanical engineers, specialized
engineers or software users). The greyed-out activities represent dissemination activities that were
not conference related (scientific publications, publications in mass-media, summer-school
proceedings).
No. Title of paper or presentation Type1
1. Jošt, D., Škerlavaj, A., Mežnar, P., and Morgut, M., 2014. Efficiency Prediction
for a Low Head Bulb Turbine with Numerical Flow Analysis. Proceedings of
Kuhljevi Dnevi 2014, Maribor, Slovenia, pp. 79–86. (in Slovene)
NC, E
2. Jošt, D., Škerlavaj, A., Morgut, M., Mežnar, P., and Nobile, E., 2015. Numerical
simulation of flow in a high head Francis turbine with prediction of efficiency,
rotor stator interaction and vortex structures in the draft tube. Journal of
Physics: Conference Series 579(1), 012006. doi:10.1088/1742-
6596/579/1/012006 (Workshop Francis-99, Trondheim, Norway, 15-16
December 2014)
IW, S-HME
3. Jošt, D., Škerlavaj, A., Mežnar, P., Morgut, M., and Nobile, E., 2015.
Improvement of efficiency prediction for axial turbines with advanced
turbulence models. ANSYS Conference & 10. CADFEM Austria Users’ Meeting,
Vienna, Austria, 29-30 April 2015 (Presentation without paper)
RC, U-A
4. Jošt, D., Morgut, M., Nobile, E., and Škerlavaj, A., 2015. Transient numerical
simulations of flow in water turbines and marine propeller with advanced
turbulence models. ANSYS User Group Meeting 2015, Bologna, Italy, 14-15 May
2015 (presentation and unpublished paper)
NC, U-A
5. Jošt, D., Škerlavaj, A., Morgut, M., and Nobile, E., 2015. Recent improvements
of performance prediction by CFD for all types of water turbines. ANSYS
Convergence Conference-2015, Ljubljana, Slovenia, 27 May 2015 (Presentation
without paper)
NC, U-A
6. Morgut, M., Jošt, D., Nobile, E., and Škerlavaj, A., 2015. Numerical
investigations of a cavitating propeller in non-uniform inflow. Proceedings of
Fourth International Symposium on Marine Propulsors, smp'15, Austin, Texas,
USA, 1-3 June 2015, Volume III, pp. 513-520.
IW, S-NE
7. Morgut, M., Nobile, E., Jošt, D., and Škerlavaj, A., 2015. Numerical predictions
of the PPTC model propeller in oblique flow. Proceedings of Second Workshop
on Cavitation and Propeller Performance, smp'15, Austin, Texas, USA, 4 June
IW, S-NE
1 N=national, R=regional, I=international, C=conference, Cou=course, W=workshop, M=meeting, E=for
engineers (in general), ME=for mechanical engineers, S=for specialists (HME=hydraulic machines engineers;
NE=naval engineers), U-A = Users of ANSYS software; U-mF=for users of modeFRONTIER software
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No. Title of paper or presentation Type1
2015, pp. 183-142.
8. Jošt, D., Škerlavaj, A., Morgut, M., and Nobile, E., 2015. Effects of turbulence
model and grid resolution on the performance prediction of a bulb turbine.
Proceedings of NAFEMS World Congress 2015, San Diego, California, USA, 21-24
June 2015.
IC, E
9. Morgut, M., Jošt, D., Nobile, E., and Škerlavaj, A., 2015. Numerical investigation
of the flow in axial water turbines and marine propellers with scale-resolving
simulations. Journal of Physics: Conference Series 655(1), 012052.
doi:10.1088/1742-6596/655/1/012052 (33rd UIT Heat Transfer Conference,
L'Aquila, Italy, 22-24 June 2015)
NC, E
10. Jošt, D., Morgut, M., Škerlavaj, A., and Nobile, E., 2015. Cavitation prediction in
a Kaplan turbine using standard and optimized model parameters. Proceedings
of the 6th IAHR International Meeting of the Workgroup on Cavitation and
Dynamic Problems in Hydraulic Machinery and Systems, Ljubljana, Slovenia, 9-
11 September 2015.
<http://iahrwg2015.si/files/papers/1_Numerical_and_experimental_investigati
on_on_cavitating_flows/IAHR__WG_15_1_6_JOST.pdf>
IC, S-HME
11. Muntean, S., Škerlavaj, A., Drăghici, I. and Anton, L.E., 2015. Numerical analysis
of the flow non-uniformity generated by symmetrical suction elbows of the
large storage pumps. Proceedings of the 6th IAHR International Meeting of the
Workgroup on Cavitation and Dynamic Problems in Hydraulic Machinery and
Systems, Ljubljana, Slovenia, 9-11 September 2015.
<http://iahrwg2015.si/files/papers/2_Analysis_of_pumps_turbines_and_pump
_turbines/NUMERICAL_ANALYSIS_OF_THE_FLOW_NON_UNIFORMITY_GENERA
TED_BY_SYMMETRICAL_SUCTION_ELBOWS_OF_THE_LARGE_STORAGE_PUMPS
.pdf>
IC, S-HME
12. Škerlavaj, A., and Ermenc, D., 2015. Experimental observations and numerical
simulations of a free-surface vortex in a test vessel. Proceedings of the 6th IAHR
International Meeting of the Workgroup on Cavitation and Dynamic Problems in
Hydraulic Machinery and Systems, Ljubljana, Slovenia, 9-11 September 2015.
<http://iahrwg2015.si/files/papers/2_Analysis_of_pumps_turbines_and_pump
_turbines/EXPERIMENTAL_OBSERVATIONS_AND_NUMERICAL_SIMULATIONS_
OF_A_FREE_SURFACE_VORTEX_IN_A_TEST_VESSEL.pdf>
IC, S-HME
13. Jošt, D., Škerlavaj, A., Morgut, M., and Nobile, E., 2015. Effect of Losses in
Labyrinth Seals on Efficiency of a High Head Francis Turbine. Proceedings of
Kuhljevi dnevi 2015, Ljubljana, Slovenia, 24-25 September 2015, pp. 81-88. (in
Slovene)
<http://www.accusim.eu/wp-
content/uploads/2015/09/KD2015_paper_Jost_et_al.pdf>
NC, E
14. Morgut, M., Jošt, D., Nobile, E., and Škerlavaj, A., 2015. Numerical predictions
of the turbulent cavitating flow around a marine propeller and an axial turbine.
IC, E
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No. Title of paper or presentation Type1
Journal of Physics: Conference Series 656(1), 012066. doi:10.1088/1742-
6596/656/1/012066. (9th International Symposium on Cavitation CAV2015,
Lausanne, Switzerland, 6-10 December 2015.)
15. Nobile, E., Jošt, D., Škerlavaj, A., and Morgut, M., 2016. Analisi CFD delle
prestazioni di turbine idrauliche e propulsori marini. NAFEMS Seminar ‘La
Fluido-Dinamica Computazionale Nella Simulazione Ingegneristica - Seminario
di Sensibilizzazione’. Torino, Italy, 16 March 2016. (Presentation without paper)
NC, E
16. Jošt, D., Škerlavaj, A., Morgut, M., and Nobile, E., 2016. Termofluidodinamica
computazionale. Tecn‘è, 6(3), pp.142–146. (printed and online)
Mass Media
17. Škerlavaj, A., Jošt, D., Morgut, M., and Nobile, E., 2016. Optimization of a single-
stage double-suction centrifugal pump using different Response Surface
methods. modeFRONTIER User‘s Meeting 2016, Trieste, Italy, 17-18 May 2016.
(Presentation without paper)
IC, U-mF
18. Jošt, D., Škerlavaj, A., Morgut, M., Stopar, R. R., and Nobile, E., 2016. Numerical
simulation of different forms of cavitation in Francis turbines. ANSYS
Convergence Conference, Ljubljana, 25 May 2016. (Presentation without paper)
<http://www.simtec.gr/ansys-convergence-conference-presentations-ljubljana-
may-2016/numerical-simulation-different-forms-cavitation-francis-turbines/>
NC, U-A
19. Škerlavaj, A., Morgut, M., Jošt, D., and Nobile, E., 2016. Optimization of a single-
stage double-suction centrifugal pump. Journal of Physics: Conference Series
796(1), 012007. doi:10.1088/1742-6596/796/1/012007 (34th UIT Heat Transfer
Conference, Ferrara, Italy, 04-06 July 2016 )
NC, E
20. Jošt, D., Škerlavaj, A., Morgut, M., and Nobile, E., 2016. Napoved kavitacije v
vodnih turbinah z računalniško dinamiko tekočin – rezultati projekta ACCUSIM.
Svet strojništva, 5(3), p. 41. Meeting 'Akademija strojništva 2016 in 5.
mednarodna konferenca strojnih inženirjev', Ljubljana, Slovenija, 18 October
2016.
<http://www.zveza-
zsis.si/content/svet_strojnistva/svet_strojnistva_okt16.pdf> (poster)
NC, ME
21. Morgut, M., Jošt, D., Škerlavaj, A., and Nobile, E., 2016. Napoved kavitacije v
vodnih turbinah in propelerjih z računalniško dinamiko tekočin - rezultati
projekta ACCUSIM (Predictions of cavitating flow in hydro-turbines and marine
propellers by CFD - results of ACCUSIM project). Društvo za hidravlične
raziskave (Association for Hydraulic Research), Ljubljana, Slovenia, 15
December 2016. (presentation only)
M, E
22. Jošt, D., Škerlavaj, A., Morgut, M., and Nobile, E., 2017. Numerical Prediction of
Cavitating Vortex Rope in a Draft Tube of a Francis Turbine with Standard and
Calibrated Cavitation Model. Journal of Physics: Conference Series 813(1),
012045. doi:10.1088/1742-6596/813/1/012045 (7th IAHR International
Meeting of the WorkGroup on Cavitation and Dynamic Problems in Hydraulic
Machinery and Systems, Porto, Portugal, 01-03 February 2017)
IC, S-HME
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No. Title of paper or presentation Type1
23. Škerlavaj, A., Morgut, M., Jošt, D., and Nobile, E., 2017. Decoupled CFD-based
optimization of efficiency and cavitation performance of a double-suction
pump. Journal of Physics: Conference Series 813(1), 012048. doi:10.1088/1742-
6596/813/1/012048 (7th IAHR International Meeting of the WorkGroup on
Cavitation and Dynamic Problems in Hydraulic Machinery and Systems, Porto,
Portugal, 01-03 February 2017)
IC, S-HME
24. Škerlavaj, A. 2017. Optimization of double-sided centrifugal pump. ERCOFTAC
course: Design Optimization - Methods & Apps, Trieste, Italy, 5-7 June.
Presentation. Link to programme:
<http://www.ercoftac.org/events/design_optimization_2017/do_2017_aim_ba
ckground_1.pdf/>
ICou, E
25. Stopar, R.R. 2017. Multiobjective optimization of the Francis turbine runner
cone. ERCOFTAC course: Design Optimization - Methods & Apps, Trieste, Italy,
5-7 June. Presentation. Link to programme:
<http://www.ercoftac.org/events/design_optimization_2017/do_2017_aim_ba
ckground_1.pdf/>
ICou, E
26. Presentations at summer school and proceedings:
Accurate simulations in hydro-machinery and marine propellers : proceedings
of ACCUSIM Summer School Conference 25th - 27th September 2017, Ljubljana
/ [editors Dragica Jošt, Aljaž Škerlavaj]. - Ljubljana : Kolektor Turboinštitut, 2017
Direct
communic. -
summer
school
27. Stopar, R.R., Škerlavaj, A., and Nobile, E., 2017. Multiobjective optimization of a
hydraulic shape of runner cone extension in Francis turbine. Proceedings of
Kuhljevi dnevi 2017, Dobrna, Slovenia, 28-29 September 2017, pp. 147-154. (in
Slovene)
<http://www.drustvozamehaniko.si/zbornik/ZbornikKD2017.pdf>
NC, E
28. Morgut, M., Jošt, D., Škerlavaj, A., Nobile, E., and Contento, G. 2017. Numerical
Predictions of Cavitating Flow Around a Marine Propeller and Kaplan Turbine
Runner with Calibrated Cavitation Models. J. of Mechanical Engineering,
DOI:10.5545/sv-jme.2017.4647. (accepted for publication)
<http://en.sv-
jme.eu/data/upload/2017/Clanki/2017_4647_Morgut_02_W.pdf>
Scientific
journal
publication
29. Jošt, D., Škerlavaj, A., Morgut, M., Nobile, E., and Pirnat, V. 2017. Napoved
kavitacije v Peltonovi turbini in v centrifugalni črpalki. Svet strojništva, 6(3), p.
74. Meeting 'Akademija strojništva 2017 in 6. mednarodna konferenca strojnih
inženirjev', Ljubljana, Slovenia, 26 October 2017.
<http://www.zveza-
zsis.si/content/svet_strojnistva/svet_strojnistva_sep_okt17.pdf> (poster)
NC, ME
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6 Conference and scientific journal papers (or published posters)
6.1 Kuhljevi dnevi 2014
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6.2 Francis-99 Workshop
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6.3 Symposium on Marine Propulsors – smp'15 (Paper No. 1)
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6.4 Symposium on Marine Propulsors – smp'15 (Paper No. 2)
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6.5 NAFEMS World Congress – NWC15
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6.6 33rd UIT Heat Transfer Conference
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6.7 IAHR WG 2015 (Paper No. 1)
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6.8 IAHR WG 2015 (Paper No. 2)
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6.9 IAHR WG 2015 (Paper No. 3)
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6.10 Kuhljevi dnevi 2015
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6.11 CAV2015
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6.12 34th UIT Heat Transfer Conference
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6.13 Akademija strojništva 2016
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6.14 IAHR WG 2017 (Paper No. 1)
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6.15 IAHR WG 2017 (Paper No. 2)
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6.16 Kuhljevi dnevi 2017
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6.17 Akademija strojništva 2017
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6.18 Strojniški vestnik (J. Mech. Eng) - article in press
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7 Conclusions
This deliverable presents dissemination and outreach activities of the ACCUSIM project.
During the lifetime of the project, numerous scientific papers were presented at conferences and at
workshops. The dissemination at conferences was an excellent opportunity to exchange knowledge,
obtained during the ACCUSIM project, with researchers and engineers. It should be mentioned that
the ACCUSIM project justified its acronym (ACCurate SIMulations). Namely, from the scientific point
of view the results have turned out, in two cases, to be among the best, when compared with other
researchers. Such two cases were the smp'15 blind test case and the Francis-99 open test case. A
short description of achievements at the two workshops, including the links, can be downloaded at
the ACCUSIM's webpage.
Besides numerous dissemination activities, many outreach activities were performed, such as
theoretical and practical (experimental) presentations for students or pupils, organization of summer
school, attended also by employees from similar companies, writing text for technically-oriented
public, creating movies for general public, using broadcast media, etc.
Some results, obtained during the lifetime of the project, will be published after the lifetime of the
project. It is therefore envisaged that the dissemination and outreach activities will continue for a
reasonable period of time after the end of the project.