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上游双扰动对圆柱气动特性影响的数值模拟

张攀峰 王晋军 武哲

张攀峰, 王晋军, 武哲等 . 上游双扰动对圆柱气动特性影响的数值模拟[J]. 北京航空航天大学学报, 2006, 32(10): 1235-1240.
引用本文: 张攀峰, 王晋军, 武哲等 . 上游双扰动对圆柱气动特性影响的数值模拟[J]. 北京航空航天大学学报, 2006, 32(10): 1235-1240.
Zhang Panfeng, Wang Jinjun, Wu Zheet al. Numerical simulation on upstream dual rods′ effect on aerodynamic characteristics of cylinder[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(10): 1235-1240. (in Chinese)
Citation: Zhang Panfeng, Wang Jinjun, Wu Zheet al. Numerical simulation on upstream dual rods′ effect on aerodynamic characteristics of cylinder[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(10): 1235-1240. (in Chinese)

上游双扰动对圆柱气动特性影响的数值模拟

基金项目: 国家自然科学基金资助项目(10272016)
详细信息
    作者简介:

    张攀峰(1978-),男,湖北武汉人,博士后,pfzhang@ase.buaa.edu.cn.

  • 中图分类号: O 357.5; V 211.3

Numerical simulation on upstream dual rods′ effect on aerodynamic characteristics of cylinder

  • 摘要: 通过用商用计算流体力学软件FLUENT 6.0中的SIMPLE方法求解二维非定常层流模型,对雷诺数Re=200时上游双扰动体对下游圆柱气动特性影响进行了数值模拟研究.计算结果表明当双扰动体相隔较近(H/d=1.1,1.33)时,其后形成单一的Karman涡街,它们对下游圆柱的干扰作用类似于单扰动体时的情况,但是流动结构发生变化的临界间距Lcri较之有效宽度相同的单扰动体的要大,因此可以推断出在该种布置下双扰动体和圆柱绕流会出现2种流动模式.在空穴流动模式下面,下游圆柱的阻力和升力脉动最多减小94%和79%,系统阻力(包括圆柱和扰动体)也能减小33%.而当双扰动体尾流为双Karman涡街时(双扰动体相隔较远H/d=3.33,5.0),圆柱迎风面部分区域仍受到来流的冲击作用,气动力减小有限.

     

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出版历程
  • 收稿日期:  2005-12-13
  • 网络出版日期:  2006-10-31

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