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

查看全文 作　　者：Rong [1,2]Li;Bowen [1]Yang;Zixuan [1,2]Yang;Shizao [1,2]Wang;Guowei [1,2]He

机构地区：[1]State Key Laboratory of Nonlinear Mechanics,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100190,China;[2]School of Engineering Sciences,University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Theoretical & Applied Mechanics Letters》索引2021年第11卷第4期,共5页

基　　金：This research is supported by the National Natural Science Foundation of China(NFSC)Basic Science Center Program for“Multiscale Problems in Nonlinear Mechanics”(Grant 11988102);the National Key Project(Grant GJXM92579);Shizhao Wang acknowledges the support from the National Natural Science Foundation of China(Grant 11922214). 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. 关键词：Wall pressure Large-eddy simulation Turbulent channel flow

相关文献

参考文献（15）
引证文献（1）
耦合文献（0）

参考文献(15)

引证文献(1)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

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

参考文献(15)

引证文献(1)

用户提示