Flow Past Two Freely Rotatable Triangular Cylinders in Tandem Arrangement

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	Flow Past Two Freely Rotatable Triangular Cylinders in Tandem Arrangement
	Wang SZ(王士召); Zhu LD; Zhang X(张星); He GW(何国威)
刊名	Journal of Fluids Engineering-Transactions of The Asme
	2011
通讯作者邮箱	wangsz@lnm.imech.ac.cn; lzhu@math.iupui.edu; zhangx@lnm.imech.ac.cn; hgw@lnm.imech.ac.cn
卷号	133 期号:8 页码:81202
关键词	Falling Paper Unsteady Aerodynamics Numerical-Simulation Circular-Cylinders Reynolds-Number Time-Series Autorotation Plates Cards Behavior
ISSN号	0098-2202
通讯作者	Wang, SZ (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
产权排序	[Wang, Shizhao; Zhang, Xing; He, Guowei] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; [Zhu, Luoding] IN Univ Purdue Univ, Dept Math Sci, Indianapolis, IN 46202 USA
合作状况	国际
中文摘要	In this paper we investigate the interaction of two freely rotatable triangular cylinders that are placed in tandem in a laminar flow. To study how the spacing between the two cylinders may influence the dynamic behavior of the cylinders and vortical structure of the flow, we have performed a series of numerical simulations of the two-cylinder-flow system. In all the simulations, the dimensionless moment of inertia and Reynolds number are fixed to 1.0 and 200, respectively. Four cases with the spacing ratio (L/D) of 2.0, 3.0, 4.0, and 5.0 are studied. With the increase of spacing, three different states of motion of the system are found. At L/D 2.0, oscillatory rotation (swinging in both directions) is observed. At L/D 3.0 both cylinders exhibit quasi-periodic autorotations. At L/D 4.0 and 5.0, a more complicated pattern (irregular autorotation) is observed. For each case, the time history of angular velocity, the phase portrait (angular acceleration versus angular velocity,) and the spectra of the moments of forces on both cylinders are plotted and analyzed. The vortical structures in the near and far wake are visualized. Physical interpretations for various phenomenon observed are presented whenever possible. [DOI: 10.1115/1.4004637]
学科主题	Engineering
分类号	二类/Q2
类目[WOS]	Engineering, Mechanical
研究领域[WOS]	Engineering
关键词[WOS]	FALLING PAPER ; UNSTEADY AERODYNAMICS ; NUMERICAL-SIMULATION ; CIRCULAR-CYLINDERS ; REYNOLDS-NUMBER ; TIME-SERIES ; AUTOROTATION ; PLATES ; CARDS ; BEHAVIOR
收录类别	SCI ; EI
资助信息	This work was supported by Chinese Academy of Sciences under the Innovative Projects (KJCX-SW-L08) and (KJCX3-SYW-S01); National Basic Research Program of China (973 Program) under Project No. 2007CB814800 and National Natural Science Foundation of China under Project Nos. 10325211, 10628206, 10732090, and 10872201.
原文出处	http://dx.doi.org/10.1115/1.4004637
语种	英语
WOS记录号	WOS:000294488300007
公开日期	2012-04-01
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/44916]
专题	力学研究所_非线性力学国家重点实验室
推荐引用方式 GB/T 7714	Wang SZ,Zhu LD,Zhang X,et al. Flow Past Two Freely Rotatable Triangular Cylinders in Tandem Arrangement[J]. Journal of Fluids Engineering-Transactions of The Asme,2011,133(8):81202.
APA	王士召,Zhu LD,张星,&何国威.(2011).Flow Past Two Freely Rotatable Triangular Cylinders in Tandem Arrangement.Journal of Fluids Engineering-Transactions of The Asme,133(8),81202.
MLA	王士召,et al."Flow Past Two Freely Rotatable Triangular Cylinders in Tandem Arrangement".Journal of Fluids Engineering-Transactions of The Asme 133.8(2011):81202.