Flow around a near-bed horizontal circular cylinder mounted on a vertical wall
Flow around a near-bed horizontal circular cylinder mounted on a vertical wall
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围绕安装在垂直墙上的近床水平圆柱体流动
DOI：
10.1016/j.oceaneng.2020.107586
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发表时间：
2020-11
影响因子：
5
通讯作者：
Lu Lin
中科院分区：
文献类型：
--
作者：
Yang Fan;Zhou Zhongbing;Lou Xiaofan;Lu Lin
本文对近床水平圆柱绕流进行了数值模拟。本文旨在研究圆柱与两平面边界交界处的流动特性。研究了间隙直径比（G/D=∞、0.5和0.2）、基于直径的雷诺数（Re D= 1250、2500和5000）和长径比（L/D= 10、20和40）对流动的影响。研究发现，差距比对垂直壁面与圆柱体交界处形成的三维流动结构有很强的影响。在间隙比和雷诺数的影响下，观察到高度三维的流动结构（即马蹄涡的振荡）。由垂直壁引起的端部效应被限制在展向方向上的0.7D内，圆柱的上游0.5D和下游3D。端部效应的程度对差距比、雷诺数或展弦比不敏感。
Flow around a near-bed horizontal circular cylinder mounted on a vertical side wall is simulated numerically in this study. The purpose of the study is to investigate the flow characteristics around the junction area between the cylinder and two plane boundaries. The effects of gap to diameter ratio (G/D=∞, 0.5 & 0.2), Reynolds number based on the diameter (R e D= 1250, 2500 & 5000) and the length to diameter (aspect) ratio (L/D= 10, 20 & 40) are investigated. It is found that the three-dimensional flow structures formed in the junction area between the vertical wall and the cylinder are strongly affected by the gap ratio. Highly three-dimensional flow structures (ie oscillations of horseshoe vortices) are observed in the influence of gap ratio and Reynolds number. The end effect induced by the vertical wall is limited within 0.7 D in the spanwise direction, 0.5 D upstream and 3D downstream of the cylinder. The extent of the end effect is not sensitive to the gap ratio, Reynolds number or the aspect ratio.
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DOI：
10.1016/j.jweia.2007.06.039
发表时间：
2008-06
影响因子：
4.8
作者：
D. Sumner;J. Heseltine
通讯作者：
D. Sumner;J. Heseltine
DOI：
10.1115/1.2919858
发表时间：
1990-08
影响因子：
1.6
作者：
B. Jensen;B. M. Sumer;H. Jensen;J. Fredsøe
通讯作者：
B. Jensen;B. M. Sumer;H. Jensen;J. Fredsøe
DOI：
10.1023/a:1013598401276
发表时间：
2001-09
期刊：
Flow, Turbulence and Combustion
影响因子：
--
作者：
D. Apsley;M. Leschziner
通讯作者：
D. Apsley;M. Leschziner
影响因子：
3.7
作者：
C. V. Seal;C. Smith;O. Akin;D. Rockwell
通讯作者：
C. V. Seal;C. Smith;O. Akin;D. Rockwell
影响因子：
4.4
作者：
B. Sumer;Christoffer Truelsen;T. Sichmann;J. Fredsøe
通讯作者：
B. Sumer;Christoffer Truelsen;T. Sichmann;J. Fredsøe