摘要
粒子图像测速是一种基于流场图像互相关分析的二维流场非接触式测试技术,在流场测量中占有非常重要的地位。本文阐述了PIV粒子图像测速的基本原理及其在复杂流场测试中的应用状况,如泊肃叶流动及圆柱绕流、横流中水平方柱绕流旋涡、涡旋波流场、横流中近壁水平圆柱绕流旋涡、角区三维分离的附着奇点结构、漩流中间包流场、角区非定常马蹄涡结构。对掌握和了解PIV测试原理及方法具有一定的参考意义。
The particle image velocimetry, a key method to measure the flow fluid, is a non-intrusive technique to measure the planar distribution of velocity for fluid based on the cross-correlation of flow images. In this paper, the application of PIV in complex flow field test is introduced, such as Poisoeullie flow and flow around a circular cylinder, vortices of cross flow past a horizontal square cyl- inde, the characteristics of vortex wave flow, vortexes of cross flow past a horizontal circular cylinde, attached saddle point of 3-D separation in juncture flow, swirling flow tundish, unsteady horseshoe vortex structure in juncture flow. The study benefits the master and understanding of the test element and test method with PIV.
出处
《西华大学学报（自然科学版）》
CAS
2009年第5期27-31,共5页
Journal of Xihua University:Natural Science Edition
关键词
粒子图像测速
PIV
流场测试
particle image velocimetry
PIV
flow field test
