WindSim Forest Model

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Encountered Problems• Profile changes throughout the empty model(standard inlet profile needs to adapt itself)• Diverging profiles (~3% deviation)• Convergence problems with very long model• Some <strong>WindSim</strong> crashes (apparently linked to forest height cellHeights or low Z-cell Numbers etc) <strong>Forest</strong> models appears to promotedivergence – reduces stability)• Are real world measurements comparable
Profile changes without forestWindspeed over flat plate [f06a]1901:1700m up wind1702: 200 m up wind1503: 200 m into forest4: 5000m into forest1305: 300 m down wind1106: 2300m down wind907: 7500m down wind705030102.5 3.5 4.5 5.5 6.5 7.5 8.5-10
Page 1 and 2: WindSim Forest ModelA pragmatic sea
Page 3 and 4: Background
Page 5 and 6: Forest Model Parameters• Forest H
Page 7 and 8: Initial setup• Artificial Terrain
Page 9 and 10: Wind speed (f80)Height: 80 Meters
Page 11: Pre-Tests• Solver/Convergence- Co
Page 15 and 16: Artefacts in Plain Terrain of a Lon
Page 17 and 18: Questions• Reason for diverging p
Page 19 and 20: Study Results
Page 21 and 22: What should it look like
Page 23 and 24: Turbulence assessment
Page 25 and 26: Comparison Graphs• Height (10m 25
Page 27 and 28: Forest height changeTurbulence: 10
Page 29 and 30: Porosity changesTurbulence: P=0.5 v
Page 31 and 32: C2 Changes at low porosity P=0.25Wi
Page 33 and 34: C2 Changes at low porosity P=0.25Tu
Page 35 and 36: Summary Porosity vs. C2 ChangesTurb
Page 37 and 38: Next Steps
Page 39 and 40: Thank You
Page 41: General Questions• Reason for div

WindSim Forest Model

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