| Subgrid-scale model for large-eddy simulation of transition and turbulence in compressible flows | |
Zhou H(周浩)1,2 ; Li XL(李新亮)1,2; Qi H(齐涵)1,2; Yu ZP(于长平)1,2
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| Corresponding Author | Yu, Changping(cpyu@imech.ac.cn) |
| Source Publication | PHYSICS OF FLUIDS
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| 2019-12-01 | |
| Volume | 31Issue:12Pages:14 |
| ISSN | 1070-6631 |
| Abstract | This article focuses on a subgrid-scale (SGS) eddy viscosity model based on helicity which is derived from our previous research [Yu et al., "Subgrid-scale eddy viscosity model for helical turbulence," Phys. Fluids 25, 095101 (2013)] for large-eddy simulation of transition and turbulence in compressible flows. Based on the character of the compressible boundary layer over a flat plate, we obtain from theoretical analysis that this model can automatically distinguish laminar flow and turbulence and can also simulate turbulence well. Meanwhile, an a priori test using direct numerical simulation (DNS) data of a spatially developing flat-plate boundary layer at Ma = 2.25 shows that the helicity model can clearly differentiate laminar, transitional, and turbulent regions. Comparing the numerical simulation results with DNS and other SGS models in the spatially developing boundary-layer over a flat plate, we find that the suggested model could precisely predict the onset of transition, transition peak, skin-friction coefficient, mean velocity profile, mean temperature profile, and turbulence intensities. In the case of a compression ramp, the model can well simulate the bypass-type transition, the separated and reattached points, and the size of the separation bubble in the corner region. Furthermore, the prominent advantage of the proposed model can predict transitional flow exactly with no explicit filtering or dynamic procedure. Published under license by AIP Publishing. |
| DOI | 10.1063/1.5128061 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000531265100001 |
| WOS Keyword | DIRECT NUMERICAL-SIMULATION ; DYNAMIC SMAGORINSKY MODEL ; BOUNDARY-LAYER |
| WOS Research Area | Mechanics ; Physics |
| WOS Subject | Mechanics ; Physics, Fluids & Plasmas |
| Funding Project | National Key Research and Development Program of China[2019YFA0405302] ; National Key Research and Development Program of China[2016YFA0401200] ; NSFC[91852203] ; NSFC[91441103] ; NSFC[11372330] ; NSFC[11472278] ; 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 Key Research and Development Program of China ; NSFC ; Science Challenge Project ; Strategic Priority Research Program of Chinese Academy of Sciences |
| Classification | 一类/力学重要期刊 |
| Ranking | 1 |
| Contributor | Yu, Changping |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/82028 |
| 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 | Zhou H,Li XL,Qi H,et al. Subgrid-scale model for large-eddy simulation of transition and turbulence in compressible flows[J]. PHYSICS OF FLUIDS,2019,31,12,:14. |
| APA | 周浩,李新亮,齐涵,&于长平.(2019).Subgrid-scale model for large-eddy simulation of transition and turbulence in compressible flows.PHYSICS OF FLUIDS,31(12),14. |
| MLA | 周浩,et al."Subgrid-scale model for large-eddy simulation of transition and turbulence in compressible flows".PHYSICS OF FLUIDS 31.12(2019):14. |
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| Jp2020134.pdf（2907KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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