Improving Fan Conception toGet the Expected PerformanceRodrigo BENEVIDESSenior Simulation EngineerValeo Powertrain Thermal...
IIThe Valeo GroupGlobal Presence
IIThe Valeo Group Climate Control Powertrain Thermal Systems Climate Control Compressors Front-End Modules4 Business G...
IIIntroductionMotivation Modified shape of fans in rotation can change its efficiencyObjective Deformed Shape when rotat...
IIFan PerformanceCFD SimulationDesign for ExpectedPerformanceWhen Rotating Fan should have the Shape of CFD ConceptionDefo...
IIReinforced Plastics Stiffnessinjectiongate plateTensile test samples:45°90°0°Stiffness depends on the orientation of fib...
IIApplicationOrientationof FibersInjection MoldingSimulation
IIMaterial Model EffectDisplacement of Fan Under RotationIsotropic Material ModelAnisotropic Material ModelIsotropic model...
IIUpdate GeometryyesDeformed Shape =Expected Shape ?Deformed fromStarting GeometryTreated MeshDeformed fromTreated MeshSec...
IIMesh Shape TreatementHyperView
II« Before » model results file« After » model results fileMesh Shape TreatementHyperView
IINext StepsAdd the air pressure load on the structure for eachtreated meshTo test different levels of mesh densityFEA Mes...
Special thanks to: Manuel HENNER (CFD Expert and CFD Department Manager) Bruno DEMORY (CFD Expert)Do you have questions?
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Improving Fan Conception to Get the Expected Performance

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Improving Fan Conception to Get the Expected Performance

  1. 1. Improving Fan Conception toGet the Expected PerformanceRodrigo BENEVIDESSenior Simulation EngineerValeo Powertrain Thermal Systems – La Verrière (France)6th European Altair Technology Conference – April 2013
  2. 2. IIThe Valeo GroupGlobal Presence
  3. 3. IIThe Valeo Group Climate Control Powertrain Thermal Systems Climate Control Compressors Front-End Modules4 Business Groups
  4. 4. IIIntroductionMotivation Modified shape of fans in rotation can change its efficiencyObjective Deformed Shape when rotating = Designed Shape to reachExpected PerformanceStructural Simulation Stiffness Anisotropy Rheology-Structure Coupling approachMethodology Mesh treatment for structural simulation
  5. 5. IIFan PerformanceCFD SimulationDesign for ExpectedPerformanceWhen Rotating Fan should have the Shape of CFD ConceptionDeformed Fan whenRotatingEfficiencyReduction = - 5%
  6. 6. IIReinforced Plastics Stiffnessinjectiongate plateTensile test samples:45°90°0°Stiffness depends on the orientation of fibersSpecimen tested at 23°C, RH500204060801001201400 0,02 0,04 0,06 0,08 0,1 0,12Engineering strainEnginneringstress(MPa)04590Tensile Tests90°45°0°StrainStress(Thicknessdirection)FibersE In-Flow > E Cross-Flow > E ThicknessE = Young modulusAnisotropy:
  7. 7. IIApplicationOrientationof FibersInjection MoldingSimulation
  8. 8. IIMaterial Model EffectDisplacement of Fan Under RotationIsotropic Material ModelAnisotropic Material ModelIsotropic models can not be used
  9. 9. IIUpdate GeometryyesDeformed Shape =Expected Shape ?Deformed fromStarting GeometryTreated MeshDeformed fromTreated MeshSecondTreated MeshDeformed fromSecond Treated MeshDisplacementscale = x5Rheology (injection)Structural (rotation)couplingStarting GeometryMesh ShapeTreatment:(Before – After) DeformationnoMethodologyMesh Treatment is the key
  10. 10. IIMesh Shape TreatementHyperView
  11. 11. II« Before » model results file« After » model results fileMesh Shape TreatementHyperView
  12. 12. IINext StepsAdd the air pressure load on the structure for eachtreated meshTo test different levels of mesh densityFEA Mesh CFD Mesh
  13. 13. Special thanks to: Manuel HENNER (CFD Expert and CFD Department Manager) Bruno DEMORY (CFD Expert)Do you have questions?

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