轿车尾流场特性的计算机数值仿真研究

Computer numerical simulation investigation of the automotive wake characteristic

以一种简化轿车模型及其几种变形模型为例对其尾流场进行了仿真计算，成功地模拟出了气流分离和拖拽涡现象，仿真结果与实验结果基本一致。利用计算和试验结果详细分析了尾流场的特性，特别对拖拽涡的形成、发展和变化规律进行了详细地讨论，并探讨了影响尾流场的因素与控制方法。

：The wake field the simplified and several modified models are simulated We successfully simulate the apperance of flow separation and trailing vortices. The computational results agree well with ex- perimental measurements. The wake characteristic is analyzed on the basis of the computational and experi- mental results detailedly Especially, the formation, developing and variation rule of the traliling vortices is discussed detailedly and the influencing factors and control method of the wake also is discussed