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高雷诺数下多柱绕流特性研究

李聪洲 张新曙 胡晓峰 李巍 尤云祥

李聪洲, 张新曙, 胡晓峰, 李巍, 尤云祥. 高雷诺数下多柱绕流特性研究[J]. 力学学报, 2018, 50(2): 233-243. doi: 10.6052/0459-1879-17-346
引用本文: 李聪洲, 张新曙, 胡晓峰, 李巍, 尤云祥. 高雷诺数下多柱绕流特性研究[J]. 力学学报, 2018, 50(2): 233-243. doi: 10.6052/0459-1879-17-346
Li Congzhou, Zhang Xinshu, Hu Xiaofeng, Li Wei, You Yunxiang. THE STUDY OF FLOW PAST MULTIPLE CYLINDERS AT HIGH REYNOLDS NUMBERS[J]. Chinese Journal of Theoretical and Applied Mechanics, 2018, 50(2): 233-243. doi: 10.6052/0459-1879-17-346
Citation: Li Congzhou, Zhang Xinshu, Hu Xiaofeng, Li Wei, You Yunxiang. THE STUDY OF FLOW PAST MULTIPLE CYLINDERS AT HIGH REYNOLDS NUMBERS[J]. Chinese Journal of Theoretical and Applied Mechanics, 2018, 50(2): 233-243. doi: 10.6052/0459-1879-17-346

高雷诺数下多柱绕流特性研究

doi: 10.6052/0459-1879-17-346
详细信息
    作者简介:

    null

    作者简介:2) 张新曙,教授,主要研究方向:船舶海洋流体力学. E-mail:xinshuz@sjtu.edu.cn

  • 中图分类号: O35;

THE STUDY OF FLOW PAST MULTIPLE CYLINDERS AT HIGH REYNOLDS NUMBERS

  • 摘要: 采用改进的延迟分离涡方法数值模拟了高雷诺数下的柱体绕流,包括单圆柱绕流、单方柱绕流、串列双圆柱绕流和串列双方柱绕流,研究了不同雷诺数下圆柱绕流与方柱绕流的水动力特性. 计算结果与实验数据及其他文献的数值计算结果吻合良好,研究表明,单方柱绕流在2.0×103<Re<1.0×107范围内未出现类似于单圆柱绕流的阻力危机现象,其平均阻力系数Cdˉ、升力系数均方根C'l及斯特劳哈尔数St维持在一定范围内波动. 串列双圆柱绕流与串列双方柱绕流中,均选取L/D=2.0, 2.5, 3.0, 3.5和4.0这五中间距比进行计算. 串列双圆柱绕流中,当Re=2.2×104时,在3.0<L/D<3.5内存在一临界间距比(Lc/D)使得Lc/D前后上下游圆柱的升阻力系数发生跳跃性变化,且当L/D<Lc/D时,下游圆柱的阻力系数为负数. 而当Re=3.0×106时,则不存在临界间距比,且下游圆柱的阻力系数始终为正数. 串列双方柱绕流在Re=1.6×104Re=1.0×106两种工况下的临界间距比分别处于3.0<L/D<3.53.5<L/D<4.0区间内,且当L/D<Lc/D时,两个雷诺数下的下游方柱阻力系数均为负数.

     

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  • 收稿日期:  2017-10-21
  • 刊出日期:  2018-03-18

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