摘要
利用粒子图像测速技术(PIV),对雷诺数150<Re<6 500 范围二维后向台阶的流动进行详细观测.实验给出时均流速分布、时均回流区长度和瞬态流动结构,探讨了后台阶分离流流动特性.
In a Reynolds number range of 150<Re<6500,a particle image velocimetry(PIV) is used to measure and visualize the 2D flow over a backward facing step. Mean velocity distribution,mean length of recirculation region and the structure of instant stream are presented by the experimental data,which help us understanding character of this flow further.
出处
《武汉大学学报（工学版）》
CAS
CSCD
北大核心
2005年第2期35-38,共4页
Engineering Journal of Wuhan University
基金
国家自然科学基金资助项目(59979022).
关键词
PIV
后向台阶流
分离流
particle image velocimetry (PIV)
backward-facing step flow
separated flow
