| 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)
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| Source Publication | THEORETICAL AND APPLIED MECHANICS LETTERS
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| 2021-05 | |
| Volume | 11Issue:4Pages:100248 |
| ISSN | 2095-0349 |
| Abstract | 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. |
| Keyword | Wall pressure Large-eddy simulation Turbulent channel flow |
| DOI | 10.1016/j.taml.2021.100248 |
| Indexed By | CSCD |
| Language | 英语 |
| WOS Research Area | Mechanics |
| Funding Organization | National Natural Science Foundation of China (NFSC) Basic Science Center Program [11988102] ; National Key Project [GJXM92579] ; National Natural Science Foundation of China [11922214] |
| Classification | 二类 |
| Ranking | 1 |
| Contributor | 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. |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/93697 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 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 |
| Recommended Citation 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.Rp_Au: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. |
| 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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| TAML014.pdf（1267KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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