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.
出处
《汽车工程》
EI
CSCD
北大核心
2009年第2期170-174,共5页
Automotive Engineering
基金
国家863计划项目(2007AA04Z122)资助
关键词
粒子图像测速
汽车风洞
尾部流场
空气动力学
particle image velocimetry
automotive wind tunnel
wake flow field
aerodynamics
