| 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
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| Source Publication | Journal of Fluids Engineering-Transactions of The Asme
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| 2011 | |
| Volume | 133Issue:8Pages:81202 |
| ISSN | 0098-2202 |
| Abstract | 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] |
| Keyword | Falling Paper Unsteady Aerodynamics Numerical-simulation Circular-cylinders Reynolds-number Time-series Autorotation Plates Cards Behavior |
| Subject Area | Engineering |
| DOI | 10.1115/1.4004637 |
| URL | 查看原文 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000294488300007 |
| WOS Keyword | FALLING PAPER ; UNSTEADY AERODYNAMICS ; NUMERICAL-SIMULATION ; CIRCULAR-CYLINDERS ; REYNOLDS-NUMBER ; TIME-SERIES ; AUTOROTATION ; PLATES ; CARDS ; BEHAVIOR |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Mechanical |
| Funding Organization | 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. |
| Department | LNM湍流 |
| Classification | 二类/Q2 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/44916 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Wang, 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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