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Numerical Simulation of Aerodynamic forces acting on Passenger Vehicle While Overtaking

Author Affiliations

  • 1School of Mechanical and Building Sciences, VIT University, Vellore-632014, TN, INDIA

Res. J. Recent Sci., Volume 1, Issue (12), Pages 55-63, December,2 (2012)


External aerodynamic analysis is considerable when any solid body obstructs the flow, like on road vehicle. Generally flow is parallel to the vehicle direction and in opposite, but in some cases like on high way where, wind is blowing from sides also. It is more interesting if the vehicles are overtaking each other, because considerable transient condition is occurring. For overtaking vehicles transient condition is inevitable which has considerable effects on results. Numerical flow around the passenger car, a bluff body, is the subject of present work in both, steady state as well as transient condition. Cross wind situation will arise transient condition on high ways frequently which can affect the directional stability of the vehicle. Here 2D cross flow and axial flow steady as well as transient cross flow with dynamic mesh CFD simulation is completed using commercial package. Generally numerical analysis predicts values near to experimental value, which is in terms of time and cost saving.


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