alexandre.lupien@polymtl.ca

saima.naz@polymtl.ca1

Multidisciplinary Design Optimization of Transonic Fans for Small Turbofan Engines

An Integrated Cad-centric Approach for Transonic Fan Blade Design

Saïma Naz, PhD student

Alexandre Lupien, M.Sc.A student

Supervised byJean-Yves Trépanier, Chair holder

Christophe Tribes, Research associateEddy Petro, Research associate

alexandre.lupien@polymtl.ca

saima.naz@polymtl.ca2

Objectives

Improve current Fan Design Process

Develop a new Parametric Model

Accelerating the Design Cycle

Enhance the Performance

Explore and apply Efficient Optimization Technique

Fan Design Challenging task

Careful and precise

alexandre.lupien@polymtl.ca

saima.naz@polymtl.ca3

Multi-Disciplinary Design Optimization

Engineering optimization method to solve design problems incorporating a number of disciplines.

Not limited to Aero and Thermodynamic performance, Also involves:

Geometrical requirements

Mechanical integrity

Life cycle & Manufacturing costs

Product cycle time

Weight, Emissions and Heat transfer

Overall Design and Optimization Process

alexandre.lupien@polymtl.ca

saima.naz@polymtl.ca4

A New CAD-Centric Parametric Model

Current process (sequential)

AERODYNAMICS ROTATING STRUCTURES DYNAMICS COMPRESSOR

DESIGN

CADCADCAD

CAD modif. requirements

alexandre.lupien@polymtl.ca

saima.naz@polymtl.ca5

A New CAD-Centric Parametric Model

CAD-Centric Model

CADAERODYNAMICS

ROTATING STRUCTURES

DYNAMICS

COMPRESSORDESIGN

CAD modif. CAD modif.

CAD modif.

CAD modif.

alexandre.lupien@polymtl.ca

saima.naz@polymtl.ca6

A New CAD-Centric Parametric Model

Good Parametric model needed– Global

• General design modif.

– Precise• Fine tuning

– Flexible• Complex 3D shapes

alexandre.lupien@polymtl.ca

saima.naz@polymtl.ca7

Merci