On the capability of the curvilinear immersed boundary method in predicting near-wall turbulence of turbulent channel flows

作     者：Fei Liao Xiaolei Yang Fei Liao;Xiaolei Yang

作者机构：State Key Laboratory of Nonlinear MechanicsInstitute of MechanicsChinese Academy of SciencesBeijing 100190China School of AeronauticsNorthwestern Polytechnical UniversityXi’an 710072China School of Engineering SciencesUniversity of Chinese Academy of SciencesBeijing 100049China 

出 版 物：《Theoretical & Applied Mechanics Letters》 (力学快报（英文版）)

年 卷 期：2021年第11卷第4期

页      面：213-218页

核心收录：

学科分类：080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）] 

基　　金：This work was supported by the National Natural Science Foundation of China(NSFC)Basic Science Center Program for“Multiscale Problems in Nonlinear Mechanics”(No.11988102) the Strategic Priority Research Program,Chinese Academy of Sciences(CAS)(No.XDB22040104) 

主　　题：Immersed boundary method Turbulent channel flow Wavenumber-frequency spectra Near-wall turbulence 

摘      要：The immersed boundary method has been widely used for simulating flows over complex ***,its accuracy in predicting the statistics of near-wall turbulence has not been fully *** this work,we evaluate the capability of the curvilinear immersed boundary(CURVIB)method in predicting near-wall velocity and pressure fluctuations in turbulent channel *** results show that quantities including the time-averaged streamwise velocity,the rms(root-mean-square)of velocity fluctuations,the rms of vorticity fluctuations,the shear stresses,and the correlation coefficients of u and vcomputed from the CURVIB simulations are in good agreement with those from the body-fitted *** importantly,it is found that the time-averaged pressure,the rms and wavenumber-frequency spectra of pressure fluctuations computed using the CURVIB method agree well with the body-fitted results.