中雷诺数圆柱、方柱绕流PIV试验对比研究  

Experimental and Comparative Study on the Flow Past a Circle and Square Cylinder at Moderate Reynolds Numbers

作　　者：邹帅[1] 徐加辉 周杰[1] 喜冠南[1] 

机构地区：[1]南通大学机械工程学院,江苏南通226019

出　　处：《机械设计与制造》2016年第6期81-84,共4页Machinery Design & Manufacture

基　　金：国家自然科学基金(51176079);南通市传热强化与过程节能重点实验室(CP12012004)

摘　　要：介绍了粒子图像测速法的基本原理,设计开发了符合试验要求的开式低速循环水槽,建立了圆柱、方柱绕流数据试验平台,采用粒子图像测速法(PIV),获得圆柱、方柱绕流图像。采用INSIGHT 4G软件对试验过程进行全面调控,通过对图像的分析比对,揭示试验条件下中雷诺数圆柱、方柱绕流的流场特性。与已有的模拟及试验结果进行对比,验证了粒子图像测速法及试验台的准确性。并选取特定雷诺数进行(圆柱)周期性研究,分析圆柱,方柱绕流特性的区别与联系。The mechanism of PIV method is introduced and a low-speed water tunnel is designed which conforms to the requirements of the experiment,and the experiment of flow around circular and square cylinder is conducted.The image of flow around circular and square cylinder is obtained by using the method of particle image velocimetry.INSIGHT 4G software can take control of the experimental process strictly.Flow field characteristics of circular and square cylinder under the condition of Reynolds number have been revealed.Comparing the image with the existing simulation and experimental results verifies the accuracy of the particle image velocimetry and test-bed.Selecting the specific Reynolds number to carry on the periodic study on cylinder,it analyzes the difference and connection of the flow characteristics of circular and square cylinder.

关 键 词：PIV 圆柱绕流 方柱绕流 速度矢量 

分 类 号：TH16[机械工程—机械制造及自动化] TK09[动力工程及工程热物理]