Crosswind stability is an important safety issue for manufacturers of cars, buses and rail vehicles. Since side wind conditions are unsteady phenomena they require time-dependent techniques to simulate the flow. In this study, a hybrid RANS-LES methods, Detached-Eddy Simulation, is applied to evaluate headwind and unsteady crosswind situations for a simple model of car. A grid refinement study is carried out to evaluate the accuracy of the calculations. Convergence in the force coefficients while refining the grid suggests that a certain level of grid convergence is reached. A similar conclusion is drawn from the unsteady simulations.
Detached-Eddy Simulations Applied to Unsteady Crosswind Aerodynamics of Ground Vehicles
2010
11 Seiten
Aufsatz (Konferenz)
Englisch
Numerical Investigation of Unsteady Crosswind Aerodynamics for Ground Vehicles
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