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液固两相圆柱绕流尾迹内颗粒扩散分布的离散涡数值研究

黄远东 吴文权

黄远东, 吴文权. 液固两相圆柱绕流尾迹内颗粒扩散分布的离散涡数值研究[J]. 应用数学和力学, 2006, 27(4): 477-483.
引用本文: 黄远东, 吴文权. 液固两相圆柱绕流尾迹内颗粒扩散分布的离散涡数值研究[J]. 应用数学和力学, 2006, 27(4): 477-483.
HUANG Yuan-dong, WU Wen-quan. Numerical Study of Particle Distribution in the Wake of Liquid-Particle Flows Past a Circular Cylinder Using Discrete Vortex Method[J]. Applied Mathematics and Mechanics, 2006, 27(4): 477-483.
Citation: HUANG Yuan-dong, WU Wen-quan. Numerical Study of Particle Distribution in the Wake of Liquid-Particle Flows Past a Circular Cylinder Using Discrete Vortex Method[J]. Applied Mathematics and Mechanics, 2006, 27(4): 477-483.

液固两相圆柱绕流尾迹内颗粒扩散分布的离散涡数值研究

基金项目: 国家自然科学基金资助项目(70371011);上海市教委发展基金(03GK04)
详细信息
    作者简介:

    黄远东(1965- ),男,湖南邵阳人,副教授,博士(联系人.Tel:+86-21-55222716;E-mail:huangyuandong@tsinghua.org.cn)

  • 中图分类号: O352

Numerical Study of Particle Distribution in the Wake of Liquid-Particle Flows Past a Circular Cylinder Using Discrete Vortex Method

  • 摘要: 基于离散涡方法求得的非定常水流场和颗粒的Lagrange运动方程,数值模拟了稀疏液固两相圆柱绕流尾迹内颗粒的扩散分布.获得了流动的涡谱与3种不同St数颗粒(St=0.25,1.0,40)在流场中的分布.通过引入扩散函数来定量表示颗粒在流场中的纵向扩散强度,并计算得到了不同St数颗粒的扩散函数随时间的变化.数值结果揭示出了液固两相圆柱绕流尾迹中的颗粒扩散分布与颗粒的St数和尾涡结构密切相关:1) 中小St数(St=0.25~4.0)颗粒在运动过程中不能进入涡核区,而在旋涡结构的外沿聚集,且颗粒的St数愈大,其越远离涡核区域;2) 在圆柱绕流尾迹区域内,中小St数(St=0.25~4.0)颗粒的纵向扩散强度随其St数的增大而减小.
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出版历程
  • 收稿日期:  2004-06-18
  • 修回日期:  2005-12-15
  • 刊出日期:  2006-04-15

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