Constrained large-eddy simulation of separated flow in a channel with   streamwise-periodic constrictions

doi:10.1080/14685248.2012.740161

CORC > 北京大学 > 工学院

	Constrained large-eddy simulation of separated flow in a channel with streamwise-periodic constrictions
	Xia, Zhenhua ; Shi, Yipeng ; Hong, Renkai ; Xiao, Zuoli ; Chen, Shiyi
刊名	journal of turbulence
	2013
关键词	constrained large-eddy simulation Reynolds-averaged Navier-Stokes method large eddy simulation detached eddy simulation periodic-hills WALL-LAYER MODELS SUBGRID-SCALE MODELS TURBULENCE LES HILLS
DOI	10.1080/14685248.2012.740161
英文摘要	Constrained large-eddy simulation (CLES) method has been recently developed by Chen and his colleagues for simulating attached and detached wall-bounded turbulent flows. In CLES, the whole domain is simulated using large-eddy simulation (LES) while a Reynolds stress constraint is enforced on the subgrid-scale (SGS) stress model for near wall regions. In this paper, CLES is used to simulate the separated flow in a channel with streamwise-periodic constrictions at Re = 10,595. The results of CLES are compared with those of Reynolds-averaged Navier-Stokes (RANS) method, LES, detached eddy simulation (DES) and previous LES results by Breuer et al. and Ziefle et al. Although a coarse grid is used, our results from the present LES, DES and CLES do not show large deviations from the reference results using much finer grid resolution. The comparison also shows that CLES performs the best among different turbulence models tested, demonstrating that the CLES provides an excellent alternative model for separated flows. Furthermore, the cross-comparisons among different CLES implementations have been carried out. Our simulation results are in favor of using the constraint from algebraic RANS model or solving the RANS model equations in the whole domain with a length scale modification according to the idea from DES.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000319563300001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Mechanics; Physics, Fluids & Plasmas; SCI(E); 9; ARTICLE; 1; 1-21; 14
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/228167]
专题	工学院
推荐引用方式 GB/T 7714	Xia, Zhenhua,Shi, Yipeng,Hong, Renkai,et al. Constrained large-eddy simulation of separated flow in a channel with streamwise-periodic constrictions[J]. journal of turbulence,2013.
APA	Xia, Zhenhua,Shi, Yipeng,Hong, Renkai,Xiao, Zuoli,&Chen, Shiyi.(2013).Constrained large-eddy simulation of separated flow in a channel with streamwise-periodic constrictions.journal of turbulence.
MLA	Xia, Zhenhua,et al."Constrained large-eddy simulation of separated flow in a channel with streamwise-periodic constrictions".journal of turbulence (2013).