PIV技术在汽车模型风洞中的应用  

The Application of PIV Technology in Automotive Wind Tunnel

作　　者：陈细军[1] 谷正气[1] 何忆斌[1] 袁志群[1] 于天恒[1] 

机构地区：[1]湖南大学,汽车车身先进设计制造国家重点实验室,长沙410082

出　　处：《汽车工程》2009年第2期170-174,共5页Automotive Engineering

基　　金：国家863计划项目(2007AA04Z122)资助

摘　　要：运用粒子图像测速(PIV)技术对某类车体纵对称面内的尾部流场进行测量;研究了不同雷诺数下尾部流场的变化,并对速度场和涡量场进行定量分析。结果表明PIV技术用于汽车周围复杂流场的测量具有很强的优势,将成为汽车空气动力学试验的一种新的研究方法。Particle Image Velocimetry （PIV） technology is applied to measure the wake flow field in the longitudinal symmetry plane Of a car-like body. The change in wake flow field at different Reynolds numbers is stud- ied and the velocity and vorticity fields are quantitatively analyzed. The results suggest that PIV technology has strong advantage in measuring complicated flow field around a vehicle, and will become a new research method in automotive aerodynamics test.

关 键 词：粒子图像测速 汽车风洞 尾部流场 空气动力学 

分 类 号：U461.1[机械工程—车辆工程]