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Optimization of Geometry for Car Bag
IOSO technologyIOSO technology
Using Analysis Codes:
Pro/EngineerGeometry
Parameterization
ANSYS ICEM CFD
Mesh construction
ANSYS CFX
CFD Analysis
IOSO NM
Optimization
Purpose: To minimize aerodynamic drag of car bag body and maximize volume
IOSO technologyIOSO technology
2 D CFD formulation of ProblemsObjectives:aerodynamic drag – to minimize; volume (S) - to maximize Design Variables: Geometry of body (4 variables)
Velocity V = 50 м/c
Optimization of Geometry for Car Bag
IOSO technologyIOSO technology
Geometry (Pro/Engineer)
yellow – variablesred – constants
Optimization of Geometry for Car Bag
IOSO technologyIOSO technology
Mesh ( ANSYS ICEM CFD)
Optimization of Geometry for Car Bag
IOSO technologyIOSO technology
ANSYSCFX
CFD analysis
IOSO NM
Optimization
ProEngineer
Parameterizationof geometry
ANSYS ICEM CFD
Construction of mesh
Optimization of Geometry for Car Bag
IOSO technologyIOSO technology
Distribution of velocity Distribution of pressure
Pareto Set(IOSO result)
Point N1Fx = 2.28S = 51650
Optimization of Geometry for Car Bag
IOSO technologyIOSO technology
Point N7Fx = 3.1
S = 61432
Pareto Set(IOSO result)
Optimization of Geometry for Car Bag
Distribution of velocity Distribution of pressure
IOSO technologyIOSO technology
Point N11Fx = 3.85S = 71470
Pareto Set(IOSO result)
Optimization of Geometry for Car Bag
Distribution of velocity Distribution of pressure
IOSO technologyIOSO technology
Point N13Fx = 5.36S = 75967
Pareto Set(IOSO result)
Optimization of Geometry for Car Bag
Distribution of velocity Distribution of pressure
IOSO technologyIOSO technology
Point N20Fx = 9.63S = 77135
Pareto Set(IOSO result)
Optimization of Geometry for Car Bag
Distribution of velocity Distribution of pressure
IOSO technologyIOSO technology
ResultsNumber of calls ~ 200
Define 20 points of Pareto Set
Compromise for aerodynamic drag is more than 4 times
Compromise for volume (S) is more than 1.5 times
Optimization of Geometry for Car Bag
