| Subgrid-scale model based on the vorticity gradient tensor for rotating turbulent flows | |
Qi H(齐涵)1,2; Li XL(李新亮)1,2 ; Yu ZP(于长平)1
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| Corresponding Author | Yu, Changping([email protected]) |
| Source Publication | ACTA MECHANICA SINICA
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| 2020-06-03 | |
| Pages | 9 |
| ISSN | 0567-7718 |
| Abstract | A new subgrid-scale (SGS) stress model is proposed for rotating turbulent flows, and the new model is based on the traceless symmetric part of the square of the velocity gradient tensor and the symmetric part of the vorticity gradient tensor (or the so-called vorticity strain rate tensor). The new subgrid-scale stress model is taken into account the effect of the vortex motions in turbulence, which is reflected on the anti-symmetric part of the velocity gradient tensor. In addition, the eddy viscosity of the new model reproduces the proper scaling as O(y(3)) near the wall. Then, the new SGS model is applied in large-eddy simulation of the spanwise rotating turbulent channel flow. Different simulating cases are selected to test the new model. The results demonstrate that the present model can well predict the mean velocity profiles, the turbulence intensities, and the rotating turbulence structures. In addition, it needs no a second filter, and is convenient to be used in the engineering rotational flows. Graphic abstract |
| Keyword | Large-eddy simulation Subgrid-scale model Rotating turbulent channel flow |
| DOI | 10.1007/s10409-020-00960-5 |
| Indexed By | SCI ; EI ; CSCD |
| Language | 英语 |
| WOS ID | WOS:000537371900004 |
| WOS Keyword | SPANWISE ROTATION ; CHANNEL |
| WOS Research Area | Engineering ; Mechanics |
| WOS Subject | Engineering, Mechanical ; Mechanics |
| Funding Project | National Natural Science Foundation of China[91852203] ; National Natural Science Foundation of China[11472278] ; National Key Research and Development Program of China[2016YFA04-01200] ; Science Challenge Project[TZ2016001] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA17030100] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDC01000000] |
| Funding Organization | National Natural Science Foundation of China ; National Key Research and Development Program of China ; Science Challenge Project ; Strategic Priority Research Program of Chinese Academy of Sciences |
| Classification | 二类 |
| Ranking | 1 |
| Contributor | Yu, Changping |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/82123 |
| Collection | 高温气体动力学国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, LHD, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Qi H,Li XL,Yu ZP. Subgrid-scale model based on the vorticity gradient tensor for rotating turbulent flows[J]. ACTA MECHANICA SINICA,2020:9.Rp_Au:Yu, Changping |
| APA | 齐涵,李新亮,&于长平.(2020).Subgrid-scale model based on the vorticity gradient tensor for rotating turbulent flows.ACTA MECHANICA SINICA,9. |
| MLA | 齐涵,et al."Subgrid-scale model based on the vorticity gradient tensor for rotating turbulent flows".ACTA MECHANICA SINICA (2020):9. |
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| Jp2020157.pdf（2084KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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