Compressibility effect in hypersonic boundary layer with isothermal wall condition

doi:10.1103/PhysRevFluids.6.054609

CORC > 力学研究所 > 中国科学院力学研究所 > 高温气体动力学国家重点实验室

	Compressibility effect in hypersonic boundary layer with isothermal wall condition
	Xu, Dehao 3; Wang, Jianchun 2; Wan, Minping 2; Yu ZP(于长平)1; Li, Xinliang 1; Chen, Shiyi 2,3
刊名	PHYSICAL REVIEW FLUIDS
	2021-05-24
卷号	6 期号:5 页码:33
ISSN号	2469-990X
DOI	10.1103/PhysRevFluids.6.054609
通讯作者	Wang, Jianchun(wangjc@sustech.edu.cn)
英文摘要	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.
分类号	二类
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
WOS关键词	DIRECT NUMERICAL-SIMULATION ; COHERENT VORTICAL STRUCTURES ; FLOW TOPOLOGY ; TEMPERATURE ; TURBULENCE ; DNS
WOS研究方向	Physics
语种	英语
WOS记录号	WOS:000655981700001
资助机构	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
其他责任者	Wang, Jianchun
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/86765]
专题	力学研究所_高温气体动力学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, Lab High Temp Gas Dynam, Beijing 100190, 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.Peking Univ, Coll Engn, State Key Lab Turbulence & Comple Syst, Beijing 100871, 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.