高雷诺数下串列双矩形柱风载特性研究  

Research on wind load characteristics of double rectangular columns in tandem arrangement at high Reynolds number

作　　者：杨吉顺 田洪森 程文明[2] 饶雄 Yang Jishun;Tian Hongsen;Cheng Wenming;Rao Xiong

机构地区：[1]上海铁路蚌埠皖铁起重机械有限公司,蚌埠233000 [2]西南交通大学机械工程学院,成都610031

出　　处：《起重运输机械》2025年第7期23-28,共6页Hoisting and Conveying Machinery

基　　金：四川省科技计划项目(2022YFG0241、2023YFG0182)。

摘　　要：为研究串列矩形柱的风载特性,文中利用流体计算软件Fluent对高雷诺数下的串列矩形柱进行风载荷数值模拟,通过对不同间距比的串列矩形柱进行绕流和涡激振动分析,得到不同间距比串列矩形柱的气动力参数、流场特征和振动响应。结果表明:不同间距比的串列矩形柱有单一细长体模式、再附模式和二元流模式等3种绕流模式,每种模式的上下游矩形柱都存在明显的锁定区间,且锁定区间随间距比的增大而变宽;上下游矩形柱的最大振动幅值出现在锁定区间,L=4.0时上游矩形柱的最大振动幅值最大,L=2.0时下游矩形柱的最大振动幅值最大。To investigate the wind load characteristics of rectangular columns in tandem arrangement,numerical simulations were conducted using the computational fluid dynamics(CFD)software Fluent at high Reynolds number.By analyzing the flow around the columns and the vortex-induced vibrations,aerodynamic parameters,flow field characteristics,and vibration responses for rectangular columns in tandem arrangement with varying spacing ratios were obtained.The results indicate that the flow patterns around rectangular columns in tandem arrangement with different spacing ratios can be categorized into single slender body mode,reattachment mode,and two-dimensional flow mode.In each mode,clear locking intervals between the upstream and downstream columns were exhibited,with these intervals widening as the spacing ratio increases.The maximum vibration amplitudes of both the upstream and downstream columns occur within these locking intervals.Specifically,the upstream column experiences its highest vibration amplitude when the spacing ratio L=4.0,while the downstream column reaches its peak vibration amplitude when L=2.0.

关 键 词：雷诺数 串列矩形柱 风载 绕流 涡激振动 间距比 

分 类 号：TH21[机械工程—机械制造及自动化]