Error of large-eddy simulation in the wall pressure fluctuation of a turbulent channel flow

doi:10.1016/j.taml.2021.100248

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

	Error of large-eddy simulation in the wall pressure fluctuation of a turbulent channel flow
	Li R(李荣); Yang BW(杨博文); Yang ZX(杨子轩); Wang SZ(王士召); He GW(何国威)
刊名	THEORETICAL AND APPLIED MECHANICS LETTERS
	2021-05
卷号	11 期号:4 页码:100248
关键词	Wall pressure Large-eddy simulation Turbulent channel flow
ISSN号	2095-0349
DOI	10.1016/j.taml.2021.100248
英文摘要	We analyze the error of large-eddy simulation (LES) in wall pressure fluctuation of a turbulent channel flow. To separate different sources of the error, we conduct both direct numerical simulations (DNS) and LES, and apply an explicit filter on DNS data to obtain filtered DNS (FDNS) data. The error of LES is consequently decomposed into two parts: The first part is the error of FDNS with respect to DNS, which quantifies the influence of the filter operation. The second part is the difference between LES and FDNS induced by the error of LES in velocity field. By comparing the root-mean-square value and the wavenumber-frequency spectrum of the wall pressure fluctuation, it is found that the inaccuracy of the velocity fluctuations is the dominant source that induces the error of LES in the wall pressure fluctuation. The present study provides a basis on future LES studies of the wall pressure fluctuation. (C) 2021 The Authors. Published by Elsevier Ltd on behalf of The Chinese Society of Theoretical and Applied Mechanics.
分类号	二类
WOS研究方向	Mechanics
语种	英语
资助机构	National Natural Science Foundation of China (NFSC) Basic Science Center Program [11988102] ; National Key Project [GJXM92579] ; National Natural Science Foundation of China [11922214]
其他责任者	Yang, ZX (corresponding author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. ; Yang, ZX (corresponding author), Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China.
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/93697]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Li R,Yang BW,Yang ZX,et al. Error of large-eddy simulation in the wall pressure fluctuation of a turbulent channel flow[J]. THEORETICAL AND APPLIED MECHANICS LETTERS,2021,11(4):100248.
APA	李荣,杨博文,杨子轩,王士召,&何国威.(2021).Error of large-eddy simulation in the wall pressure fluctuation of a turbulent channel flow.THEORETICAL AND APPLIED MECHANICS LETTERS,11(4),100248.
MLA	李荣,et al."Error of large-eddy simulation in the wall pressure fluctuation of a turbulent channel flow".THEORETICAL AND APPLIED MECHANICS LETTERS 11.4(2021):100248.