An Insight into Flood Modeller 2d Troubleshooting · PDF fileMass Balance. Froude Number....
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AN INSIGHT INTO FLOOD MODELLER PRO 2D TROUBLESHOOTING Emma Bullen 19 th October 2017
Transcript of An Insight into Flood Modeller 2d Troubleshooting · PDF fileMass Balance. Froude Number....
AN INSIGHT INTO FLOOD MODELLER PRO 2D TROUBLESHOOTINGEmma Bullen19th October 2017
© Arcadis 2015
• Introduction• Canal & River Trust Breach Assessment • Flood Modeller Pro 2D• Common Errors and their Solutions • Conclusion
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Contents
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Introduction
Typically 1-2 Canal Breaches per year (Canal & River Trust)
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• Arcadis is the sole provider of professional services for the Canal & River Trust
• Water Management and Resilience Team
• Flood Modeller Pro 2D
© Arcadis 2015
Canal & River Trust Canal Breach Assessments
• Embankments and Culverts
• Risk of Flooding
• Assessment of Potential Loss of Life and Third Party Damages
• Canal & River Trust Allocation
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Flood Modeller Pro 2D
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Topographic Information
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Active Area
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Computational Area
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Roughness Data
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Domain Details
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Inflow Point
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0
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0 2 4 6 8 10 12
Flow
(cum
ecs)
Time (hrs)
Flow Hydrograph
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Outputs Tab
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Outputs
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Depth (m) Hazard Flow (m3/sec)
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Depth Animation
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Legend
Inflow Point
Canal
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Damage Calculator
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• Damages Database
• Property Data
• Flood Depth Grid
• Hazard Grid
• Water Level Time Inundation
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So far…
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Common Errors and their Solutions
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• Mass Balance
• Froude Number
• Negative Depths
Fr = 1 Critical FlowFr > 1 Supercritical Flow Fr < 1 Subcritical Flow
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Spatial Diagnostics
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Topography – Flow Paths
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LegendInflow PointCanalRiver
Lower CanalLower Ground
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Topography – LiDAR Smoothing
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LegendInflow PointCanalRiver
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Inflow Point Location
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LegendInflow PointCanalRiverInflow Point_2
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Roughness Patch
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LegendInflow PointCanalRiver
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Solver
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ADITVD
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Timestep
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2
1
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Summary
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Errors
Mass BalanceFroude NumberNegative Depths
Causes
Flows path definitionSteep Topography
Uneven TerrainSolutions
Adjust topography Move Inflow PointAdjust Roughness
Change SolverReduce Timestep
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Conclusions
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• Canal & River Trust Breach Modelling
• Errors and Solutions
Arcadis Birmingham, Bristol, Cardiff, Guildford
Assistant Consultant
arcadis.com
Thank you!
Any Questions
