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

doi:10.1016/j.taml.2021.100248

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	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)
发表期刊	THEORETICAL AND APPLIED MECHANICS LETTERS
	2021-05
卷号	11 期号:4 页码:100248
ISSN	2095-0349
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.
关键词	Wall pressure Large-eddy simulation Turbulent channel flow
DOI	10.1016/j.taml.2021.100248
收录类别	CSCD
语种	英语
WOS研究方向	Mechanics
项目资助者	National Natural Science Foundation of China (NFSC) Basic Science Center Program [11988102] ; National Key Project [GJXM92579] ; National Natural Science Foundation of China [11922214]
论文分区	二类
力学所作者排名	1
RpAuthor	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.
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/93697
专题	非线性力学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, 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	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.

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