高速行驶遭遇侧风的SUV汽车气动特性模拟研究

Aerodynamic Characteristic Simulation for a SUV in High Speed and Crosswind

采用计算流体力学和合成风方法研究某SUV汽车高速行驶遭遇比较危险强度侧风下的外流场分布并得到气动力(矩)及系数。该方法使乘用车高速行驶遭遇危险侧风情况下气动特性预测成为可能。为深入研究高速行驶侧风作用下乘用车气动特性以及结合汽车操纵动力学对侧风稳定性进行动力学仿真提供了有利的参考。

This essay calculates the aerodynamic characteristic of a SUV in high speed and in some dangerous crosswind with the theory of computational fluid dynamics and the method of compose wind, which are appropriate to predict the aerodynamic characteristic. It benefits the aerodynamic performance of vehi- cle .Combined with vehicle handling dynamics, it also promotes dynamics simulation on crosswind stability in high speed.