采用三维粒子图像测速系统对某跑车模型的尾部流场进行测量。根据测试结果,分析了跑车模型尾部速度场与涡量场的全局特性、上尾涡的形态及其发展过程,以及雷诺数对模型尾部流场特性的影响。
The 3D particle image velocimetry(PIV) system is used to measure the wake flow field of a sport car model.Based on the measured data,the global characteristics of velocity and vorticity fields at the wake of car model,the shape and developing process of upper wake vortices and the influence of Reynolds numbers on the characteristics of wake flow field of the model are analyzed.