Abstract
Research the aerodynamic characteristics of vehicle under lateral wind action for the process of two vehicles passing each other based on the CFD (Computational Fluid Dynamics) numerical simulation of the dynamic grid technology. Analysis the change rule of aerodynamic characteristics of vehicles in the process of vehicles passing each other and discuss the influence of wind speed, driving speed and the different bridge transverse driving locations upon aerodynamic characteristics of vehicles. The results show that, it has large mutation for the aerodynamic force coefficients of the windward vehicle and leeward vehicle. The overturn moment coefficient, lift force coefficient, lateral fore coefficient both reduce with increasing driving speed and both increase with increasing lateral wind speed.
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