IMECH-IR  > 非线性力学国家重点实验室
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); Wang, SZ (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
Source PublicationJournal of Fluids Engineering-Transactions of The Asme
2011
Volume133Issue:8Pages:81202
ISSN0098-2202
AbstractIn 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]
KeywordFalling Paper Unsteady Aerodynamics Numerical-simulation Circular-cylinders Reynolds-number Time-series Autorotation Plates Cards Behavior
Subject AreaEngineering
DOI10.1115/1.4004637
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000294488300007
WOS KeywordFALLING PAPER ; UNSTEADY AERODYNAMICS ; NUMERICAL-SIMULATION ; CIRCULAR-CYLINDERS ; REYNOLDS-NUMBER ; TIME-SERIES ; AUTOROTATION ; PLATES ; CARDS ; BEHAVIOR
WOS Research AreaEngineering
WOS SubjectEngineering, Mechanical
Funding OrganizationThis 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.
DepartmentLNM湍流
Classification二类/Q2
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/44916
Collection非线性力学国家重点实验室
Corresponding AuthorWang, SZ (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
Recommended Citation
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,&Wang, SZ .(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.
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