Experimental study on lid-driven cavity flow at high Reynolds number

被引：0

作者：

Zhang, Jinfeng ^{[1
]}

Chang, Lu ^{[1
]}

Maa, Jerome Peng-Yea ^{[2
]}

机构：

[1] State Key Laboratory of Hydraulic Engineering Simulation and Safety, Tianjin University, Tianjin

[2] Virginia Institute of Marine Science, Gloucester Point, 23062, VA

来源：

Shuikexue Jinzhan/Advances in Water Science | 2015年 / 26卷 / 02期

基金：

中国国家自然科学基金;

关键词：

Downstream secondary eddy; Flow field; Lid-driven cavity flow; Particle image velocimetry; Reynolds number;

D O I：

10.14042/j.cnki.32.1309.2015.02.013

中图分类号：

学科分类号：

摘要：

Laboratory experiments have been conducted to study high Reynolds number (from 1×105 to 1×106), three-dimensional lid-driven cavity flows in two cavity dimensions: 0.2m×0.2m×0.2m and 0.5m×0.5m×0.5m. Particle Image Velocimetry (PIV) technical was applied to investigate the flow field and the effects of wall on the flow fields. Measured time-averaged streamlines show that the primary eddy starts to distort at Re=5×105 and starts to breakup into two/three eddies at Re=1×106. The region of Downstream Secondary Eddy (DSE) decreases as the Reynolds number increases. At Re=5×105, a fully developed DSE can be seen clearly. But it is hard to see when Re=1×106. The thickness of boundary layer becomes thinner and thinner as the Reynolds number increases. The measurements also show that the side boundary has a significant impact of the primary eddy. ©, 2015, China Water Power Press. All right reserved.

引用

页码：250 / 256

页数：6

共 18 条

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