| Large eddy simulation of shock wave/turbulent boundary layer interaction under incipient and fully separated conditions | |
Ji XX(纪相鑫) ; Li XL(李新亮); Tong FL(童福林); Yu ZP(于长平)
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| Source Publication | PHYSICS OF FLUIDS
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| 2023-04 | |
| Volume | 35Issue:4Pages:46106 |
| ISSN | 1070-6631 |
| Abstract | Large eddy simulations of shock wave/turbulent boundary layer interaction on a compression ramp at the Mach number M a infinity = 5 and Reynolds number R e infinity = 14 000 are performed to investigate the impact of the incipient and fully separated conditions on the development of the flow field. The quasi-dynamic subgrid-scale kinetic energy equation model, which combines the benefits of the gradient model with the eddy-viscosity model, has been applied. Compared with the previous experimental and numerical results, the simulation was validated. The flow structures, turbulence properties, vortex structures, and low-frequency unsteadiness are all investigated. The flow field of the incipient separation is attached and rarely impacted by shock. An evident separation bubble and localized high wall temperatures in fully separated flow are caused by the separation shock's significant reverse pressure gradient. The Reynolds stress components exhibit significant amplification in both cases, and the peak outward shifts from the near-wall region to the center of the free shear layer. Turbulent kinetic energy terms were analyzed, and the two scenarios show a significant difference. The power spectral density of the wall pressure fluctuations shows that the low-frequency motion of the incipient separation is not apparent relative to the fully separated flow. |
| DOI | 10.1063/5.0147829 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000964992400010 |
| Funding Organization | National Key Research and Development Program of China [2019YFA0405300] ; NSFC [12232018, 12072349, 12202457] |
| Classification | 一类/力学重要期刊 |
| Ranking | 1 |
| Contributor | Yu, CP |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/92263 |
| Collection | 高温气体动力学国家重点实验室 |
| Affiliation | 1.(Ji Xiangxin, Li Xinliang, Yu Changping) Chinese Acad Sci Inst Mech LHD Beijing 100190 Peoples R China 2.(Ji Xiangxin, Li Xinliang) Univ Chinese Acad Sci Sch Engn Sci Beijing 100049 Peoples R China 3.(Tong Fulin) State Key Lab Aerodynam Mianyang 621000 Peoples R China |
| Recommended Citation GB/T 7714 | Ji XX,Li XL,Tong FL,et al. Large eddy simulation of shock wave/turbulent boundary layer interaction under incipient and fully separated conditions[J]. PHYSICS OF FLUIDS,2023,35,4,:46106.Rp_Au:Yu, CP |
| APA | 纪相鑫,李新亮,童福林,&于长平.(2023).Large eddy simulation of shock wave/turbulent boundary layer interaction under incipient and fully separated conditions.PHYSICS OF FLUIDS,35(4),46106. |
| MLA | 纪相鑫,et al."Large eddy simulation of shock wave/turbulent boundary layer interaction under incipient and fully separated conditions".PHYSICS OF FLUIDS 35.4(2023):46106. |
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| Jp2023A167.pdf（6818KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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