Numerical Analysis of Flow around Two Tandem Circular Cylinders
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摘要: 为避免流体流动引起共振,采用有限体积法,对串列双圆柱尾迹流进行了数值分析,探讨了斯特劳哈尔数(Strouhal数)随圆柱间距比和雷诺数变化的规律.研究表明:在不同流场形态下,斯特劳哈尔数随圆柱间距比的变化规律不同;斯特劳哈尔数随雷诺数的增大而增大,但增大幅度与流场形态有关.
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关键词:
- 圆柱绕流 /
- 斯特劳哈尔数(Strouhal数) /
- 涡脱落
Abstract: To avoid the sympathetic vibration,the flow around two circular cylinders with an equal diameter in a tandem arrangement was researched numerically using the finite volume method.Strouhal number as a function of spacing ratio and Reynolds number was investigated.The research results show that the behavior of the Strouhal number with change of the spacing ratio is decided by flow regions,and the effect of the Reynolds number on the Strouhal number has the same trend in all flow regions.The Strouhal number increases with the Reynolds number increasing,but there is a great difference in the increasing amplitude to different flow regions.-
Key words:
- flow around circular cylinder /
- Strouhal number /
- vortex shedding
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