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上游静止方柱尾流对下游方柱体尾激振动效应影响

涂佳黄 谭潇玲 杨枝龙 邓旭辉 郭小刚 张平

涂佳黄, 谭潇玲, 杨枝龙, 邓旭辉, 郭小刚, 张平. 上游静止方柱尾流对下游方柱体尾激振动效应影响[J]. 力学学报, 2019, 51(5): 1321-1335. doi: 10.6052/0459-1879-19-051
引用本文: 涂佳黄, 谭潇玲, 杨枝龙, 邓旭辉, 郭小刚, 张平. 上游静止方柱尾流对下游方柱体尾激振动效应影响[J]. 力学学报, 2019, 51(5): 1321-1335. doi: 10.6052/0459-1879-19-051
Tu Jiahuang, Tan Xiaoling, Yang Zhilong, Deng Xuhui, Guo Xiaogang, Zhang Ping. EFFECT OF WAKE INDUCED-VIBRATION RESPONSES OF A SQUARE CYLINDER BEHIND THE STATIONARY SQUARE CYLINDER[J]. Chinese Journal of Theoretical and Applied Mechanics, 2019, 51(5): 1321-1335. doi: 10.6052/0459-1879-19-051
Citation: Tu Jiahuang, Tan Xiaoling, Yang Zhilong, Deng Xuhui, Guo Xiaogang, Zhang Ping. EFFECT OF WAKE INDUCED-VIBRATION RESPONSES OF A SQUARE CYLINDER BEHIND THE STATIONARY SQUARE CYLINDER[J]. Chinese Journal of Theoretical and Applied Mechanics, 2019, 51(5): 1321-1335. doi: 10.6052/0459-1879-19-051

上游静止方柱尾流对下游方柱体尾激振动效应影响

doi: 10.6052/0459-1879-19-051
基金项目: 1) 国家自然科学基金(11602214);国家自然科学基金(51434002);中国博士后科学基金(2017M622593);湖南省教育厅科学研究优秀青年项目(18B079);湖南省自然科学基金资助(2016JJ3117)
详细信息
    通讯作者:

    涂佳黄

  • 中图分类号: O357.1

EFFECT OF WAKE INDUCED-VIBRATION RESPONSES OF A SQUARE CYLINDER BEHIND THE STATIONARY SQUARE CYLINDER

  • 摘要: 基于半隐式特征线分裂算子有限元法,对低雷诺数下串列布置上游静止方柱--下游双自由度运动方柱体结构的尾激振动问题进行了研究.首先与现有文献结果进行对比验证该方法的正确性.然后着重分析了雷诺数($Re$)与折减速度$(U_{\rm r})$两个关键参数对下游方柱尾激振动响应的影响,同时将计算结果与单方柱工况进行了对比. 数值计算结果表明,雷诺数和折减速度对下游方柱的振幅、振动频率和运动轨迹等动力响应特性的影响较大.随着雷诺数的增大,双柱系统的互扰效应从以涡激效应为主逐渐转变为尾激效应发挥主导作用,从而导致下游方柱的振动响应增强.单方柱工况结构运动轨迹均呈"8"字形. 然而,下游方柱的运动轨迹会随着雷诺数的增加而变得复杂.雷诺数较小时($Re\!=\!40$, 80),下游方柱的运动轨迹基本为"8"字形. 雷诺数较大时($Re\!=\!120$, 160,200), 下游方柱的运动轨迹会出现双"8"字形. 同时,下游方柱的尾流场特性主要呈现2S, 2S*, 2P, 2T, P+S和稳态6种模式.最后, 通过对流场特性进行分析,揭示了串列双方柱系统尾激振动效应的作用机理.

     

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出版历程
  • 收稿日期:  2019-03-06
  • 刊出日期:  2019-09-18

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