尾翼对车辆的空气动力学影响模拟分析及试验验证

Simulation Analysis and Test Validation of the Influence of Rear Spoiler to Aerodynamic of Vehicle

为了研究不同造型结构的尾翼对整车空气动力学的影响,建立三维模型,利用Fluent软件对其进行分析计算,综合考虑动力性、经济性及稳定性的要求,同时进行风洞试验。结果表明:随着尾翼高度的增加,风阻系数先减少,后增加,后升力不断减少,前升力有所增加,增加的趋势比较缓慢。同时也认证了计算模型以及模拟结果的准确性,为以后的开发提供了一种经济、快速的方法。

In order to study the influence of different rear spoiler to aerodynamic of vehicle, 3- D model is established. Software Fluent is used considering the power, economy and stability requirements. The wind tunnel test has also been done for validation. The result shows from the influence of the height of rear spoiler on lift and drag for a vehicle, as the height of rear spoiler increased, the drag will decrease and then increase, the rear lift will be lower and lower. The accuracy of the calculation model is also certified, and an economical and rapid method is provided for future development.