Abstract
The research program of crosswind aerodynamics was formulated with yaw model test of the relative motion principle for a domestic heavy duty truck. This approach was applied separately wind tunnel test and numerical simulation, to obtain six aerodynamic coefficients of the corresponding heavy duty truck model, and the numerical simulation method was proved to be true by comparative analysis. The conclusions of aerodynamic characteristics got from simulation could provide a useful reference to reduce the impact on crosswind handling stability and the fuel consumption of the heavy duty truck.
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