A non-equilibrium slip wall model for large-eddy simulation with an immersed boundary method

doi:10.1063/5.0101010

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	A non-equilibrium slip wall model for large-eddy simulation with an immersed boundary method
	Shi, Beiji 1,2; Xu, Zhaoyue 1,2; Wang, Shizhao 1,2
刊名	AIP ADVANCES
	2022-09-01
卷号	12 期号:9 页码:12
DOI	10.1063/5.0101010
通讯作者	Wang, Shizhao(wangsz@lnm.imech.ac.cn)
英文摘要	A non-equilibrium wall model for large-eddy simulation with the immersed boundary (IB) method is proposed to reduce the required number of grid points in simulating wall-bounded turbulence. The proposed wall model is presented as an appropriate slip velocity on the wall. The slip velocity is constructed by integrating the simplified turbulent boundary layer (TBL) equation along the wall-normal direction, which enhances the integral momentum balance near the wall on a coarse grid. The effect of pressure gradient on the near wall flow is taken into account by retaining the pressure gradient term in the simplified TBL equation. The proposed model is implemented in the form of a direct-forcing IB method with moving-least-square reconstruction near the wall. The benchmarks of plane channel turbulence and the flows over a backward-facing step are used for validation. The proposed model improves the wall stresses and velocity profiles in the region where the pressure gradient dominates the near wall flows. (C) 2022 Author(s).
资助项目	NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics[11988102] ; National Natural Science Foundation of China[11922214]
WOS关键词	DIRECT NUMERICAL-SIMULATION ; FLOW ; LAYER ; DYNAMICS ; AIRFOIL
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
WOS记录号	WOS:000876202700001
资助机构	NSFC Basic Science Center Program for Multiscale Problems in Nonlinear Mechanics ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/90657]
专题	力学研究所_非线性力学国家重点实验室
通讯作者	Wang, Shizhao
作者单位	1.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Shi, Beiji,Xu, Zhaoyue,Wang, Shizhao. A non-equilibrium slip wall model for large-eddy simulation with an immersed boundary method[J]. AIP ADVANCES,2022,12(9):12.
APA	Shi, Beiji,Xu, Zhaoyue,&Wang, Shizhao.(2022).A non-equilibrium slip wall model for large-eddy simulation with an immersed boundary method.AIP ADVANCES,12(9),12.
MLA	Shi, Beiji,et al."A non-equilibrium slip wall model for large-eddy simulation with an immersed boundary method".AIP ADVANCES 12.9(2022):12.