国产客车模型风洞试验研究

Study on Wind-Tunnel Test for Domestic Bus Model

风洞试验是研究汽车动力特性的重要手段,可以为降低燃油消耗、改善行驶性能提供依据。文中对1∶5的客车模型进行了风洞试验研究,得出3种前部形状减阻效果的分析,指出棱角过渡的前部造型边角稍加圆滑可以达到很好的减阻效果。车身表面压力分布的测试结果,可为合理选择发动机冷却进出风口提供依据。

The wind-tunnel test is the main measure for studying vehicle dynamic characteristic.It also can offer ref-erences for improving fuel economics and driving performance.In the paper,wind tunnel tests study of the1∶5bus model are done,and air resistance reduction effects of three front vehicle shapes are analyzed.It is pointed out that,for the edgetran sit-ing front shape,a small-radius round can give very good air resistance reduction effect.Pressure distribution on the body surface measured from wind tunnel tests is important references for grille design.