Three-dimensional numerical simulation of the flow around two cylinders at supercritical Reynolds number

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	Three-dimensional numerical simulation of the flow around two cylinders at supercritical Reynolds number
	H. X. Hu; C. B. Liu; H. Z. Hu; Y. G. Zheng
	2013
发表期刊	Fluid Dynamics Research
ISSN	0169-5983
卷号	45 期号:5
摘要	Numerical study of the flow past two tandem cylinders is carried out at P / D = 1.5 and 2.5 for Re = 2.8 x 10(5)-7.0 x 10(5). The shear-stress transport k-omega turbulence model is selected to capture the flow characteristics around the cylinders. This paper focuses on the characteristics of the fluid field, hydrodynamic forces and vortex- shedding frequencies at two cylinder configurations for different Reynolds numbers (Re). Qualitative and quantitative comparisons with the published data are performed to evaluate the current results and reasonable agreement is obtained. The results show that vortex shedding occurs behind both the upstream and downstream cylinders at P/ D = 2.5 for the entire region of testing Re, which is significantly different from the most critical gap spacing (above 3D) at low Re. The drag direction changes from negative at P/ D = 1.5 to positive at P/ D = 2.5. And the fluctuations found in the lift for the downstream cylinder are more drastic than that for the upstream cylinder, which indicates that the downstream cylinder may behave in large vibration. The Strouhal number (St) at P/ D = 1.5 is relatively low compared to that at P/ D = 2.5 due to the strong interactions between two cylinders with small gap spacing.
部门归属	[hu, h. x. ; liu, c. b. ; hu, h. z. ; zheng, y. g.] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. ; hu, hx (reprint author), chinese acad sci, inst met res, state key lab corros & protect, 62 wencui rd, shenyang 110016, peoples r china. ; hxhu@imr.ac.cn
关键词	Staggered Circular-cylinders Tandem Arrangement Cross-flow Wake Interference Oscillation
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71261
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. X. Hu,C. B. Liu,H. Z. Hu,et al. Three-dimensional numerical simulation of the flow around two cylinders at supercritical Reynolds number[J]. Fluid Dynamics Research,2013,45(5).
APA	H. X. Hu,C. B. Liu,H. Z. Hu,&Y. G. Zheng.(2013).Three-dimensional numerical simulation of the flow around two cylinders at supercritical Reynolds number.Fluid Dynamics Research,45(5).
MLA	H. X. Hu,et al."Three-dimensional numerical simulation of the flow around two cylinders at supercritical Reynolds number".Fluid Dynamics Research 45.5(2013).