| Compressibility effect in hypersonic boundary layer with isothermal wall condition | |
Xu, Dehao1; Wang, Jianchun2; Wan, Minping2; Yu ZP(于长平)3 ; Li, Xinliang3; Chen, Shiyi1,2
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| 通讯作者 | Wang, Jianchun(wangjc@sustech.edu.cn) |
| 发表期刊 | PHYSICAL REVIEW FLUIDS
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| 2021-05-24 | |
| 卷号 | 6期号:5页码:33 |
| ISSN | 2469-990X |
| 摘要 | The compressibility effect in isothermal hypersonic boundary layer is studied with direct numerical simulation (DNS) using Helmholtz decomposition. The dilatational components of the diagonal Reynolds stress are enhanced by the cold wall condition in the near-wall region. The outward (Q1) and ejection (Q2) events are mainly located in the expansion region, while the inward (Q3) and sweep (Q4) events are primarily situated in the compression region near the wall. It is found that the cold wall condition can enhance the inward (Q3) event mainly in the compression region and enhance the ejection (Q2) event mainly in the expansion region near the wall. In particular, the cold wall can significantly enhance the positive streamwise solenoidal fluctuating velocity and negative wall-normal dilatational fluctuating velocity events. Moreover, the cold wall condition enhances the positive correlation of streamwise velocity fluctuation and fluctuating temperature, and suppresses the negative correlation of wall-normal velocity fluctuation and fluctuating temperature in the near-wall region, while it slightly weakens the negative correlation of streamwise velocity fluctuation and fluctuating temperature and the positive correlation of wall-normal velocity fluctuation and fluctuating temperature far from the wall. It is also found that the dilatational components of correlations are dominated in the near-wall region, while the solenoidal components govern the correlations far from the wall. Most of the interactions among mean and fluctuating fields of kinetic and internal energy are governed by the solenoidal components, except for the terms associated with the pressure, which are governed by the dilatational components. |
| DOI | 10.1103/PhysRevFluids.6.054609 |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000655981700001 |
| 关键词[WOS] | DIRECT NUMERICAL-SIMULATION ; COHERENT VORTICAL STRUCTURES ; FLOW TOPOLOGY ; TEMPERATURE ; TURBULENCE ; DNS |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Fluids & Plasmas |
| 资助项目 | NSFC Basic Science Center Program[11988102] ; National Natural Science Foundation of China (NSFC)[91952104] ; National Natural Science Foundation of China (NSFC)[92052301] ; National Natural Science Foundation of China (NSFC)[91752201] ; Technology and Innovation Commission of Shenzhen Municipality[KQTD20180411143441009] ; Technology and Innovation Commission of Shenzhen Municipality[JCYJ20170412151759222] ; Department of Science and Technology of Guangdong Province[2019B21203001] ; Center for Computational Science and Engineering of Southern University of Science and Technology |
| 项目资助者 | NSFC Basic Science Center Program ; National Natural Science Foundation of China (NSFC) ; Technology and Innovation Commission of Shenzhen Municipality ; Department of Science and Technology of Guangdong Province ; Center for Computational Science and Engineering of Southern University of Science and Technology |
| 论文分区 | 二类 |
| 力学所作者排名 | 3+ |
| RpAuthor | Wang, Jianchun |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/86766 |
| 专题 | 高温气体动力学国家重点实验室 |
| 作者单位 | 1.Peking Univ, Coll Engn, State Key Lab Turbulence & Comple Syst, Beijing 100871, Peoples R China; 2.Southern Univ Sci & Technol, Dept Mech & Aerosp Engn, Ctr Complex Flows & Soft Matter Res, Guangdong Prov Key Lab Fundamental Turbulence Res, Shenzhen 518055, Peoples R China; 3.Chinese Acad Sci, Inst Mech, Lab High Temp Gas Dynam, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Dehao,Wang, Jianchun,Wan, Minping,et al. Compressibility effect in hypersonic boundary layer with isothermal wall condition[J]. PHYSICAL REVIEW FLUIDS,2021,6,5,:33. |
| APA | Xu, Dehao,Wang, Jianchun,Wan, Minping,于长平,Li, Xinliang,&Chen, Shiyi.(2021).Compressibility effect in hypersonic boundary layer with isothermal wall condition.PHYSICAL REVIEW FLUIDS,6(5),33. |
| MLA | Xu, Dehao,et al."Compressibility effect in hypersonic boundary layer with isothermal wall condition".PHYSICAL REVIEW FLUIDS 6.5(2021):33. |
| 条目包含的文件 | ||||||
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| Jp2021F245.pdf（12260KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | 浏览 请求全文 | |
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