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方柱与分隔板间距对绕流特性的影响

发表时间:2015-11-30  浏览量:1502  下载量:338
全部作者: 李金生,张力,丁林,杨仲卿
作者单位: 重庆大学低品位能源利用技术及系统教育部重点实验室
摘 要: 为揭示方柱与后置分隔板的流场特性及尾迹脱涡机理,对低雷诺数(Re=150)下流道内方柱与后置分 隔板进行数值研究,讨论方柱及分隔板的受力、尾迹特征、流道壁面和流动特性的阶段性。结果表明,在阻 塞比为1/6 的流道内,分隔板长度为D 时,随着方柱与分隔板间距G 的变化(0~7D),临界间距为2.60D, 流动特性呈现两种不同的阶段:当0
关 键 词: 流动机械工程及流体动力工程;方柱;分隔板;阻塞比;流动特性;脱涡特征
Title: Effect of gap between square cylinder and splitter plate on flow characteristics
Author: LI Jinsheng, ZHANG Li, DING Lin, YANG Zhongqing
Organization: Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Ministry of Education,Chongqing University
Abstract: To reveal the flow and wake vortex-shedding characteristics over a square cylinder with a detached splitter plate, a numerical study of square cylinder with splitter plate was conducted at low Reynolds number (Re=150) in flow channel. The force acted on the square cylinder and plate, the wake characteristics, flow channel wall and regimes of the flow were discussed. The results show that, for the flow channel with blockage ratio of 1/6, when the gap G which is the distance between cylinder and plate is varied from 0-7D with a constant plate length of D, the behavior of the flow can be grouped into two regimes, and the critical gap distance is observed to occur at G=2.60D. When 0
Key words: flowing mechanical engineering and hydrodynamic engineering; square cylinder; splitter plate; blockage ratio; flow characteristics; vortex shedding
发表期数: 2015年11月第22期
引用格式: 李金生,张力,丁林,等. 方柱与分隔板间距对绕流特性的影响[J]. 中国科技论文在线精品论文,2015,8(22):2310-2319.
 
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