Large-eddy simulation of wall-bounded turbulent flow with high-order discrete unified gas-kinetic scheme

作     者：Rui Zhang Chengwen Zhong Sha Liu Congshan Zhuo 

作者机构：School of AeronauticsNorthwestern Polytechnical University127 West Youyi Road710072Xi’anPeople’s Republic of China National Key Laboratory of Science and Technology on Aerodynamic Design and ResearchNorthwestern Polytechnical University127 West Youyi Road710072Xi’anPeople’s Republic of China 

出 版 物：《Advances in Aerodynamics》 (空气动力学进展（英文）)

年 卷 期：2020年第2卷第1期

页      面：528-554页

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：The National Numerical Wind Tunnel Project,the National Natural Science Foundation of China(Grant No.11902264,11902266,12072283) the 111 Project of China(B17037) as well as the ATCFD Project(2015-F-016) 

主　　题：Large-eddy simulation Wall-bounded turbulent flow DUGKS High order scheme 

摘      要：In this paper,we introduce the discrete Maxwellian equilibrium distribution function for incompressible flow and force term into the two-stage third-order Discrete Unified Gas-Kinetic Scheme(DUGKS)for simulating low-speed turbulent *** Wall-Adapting Local Eddy-viscosity(WALE)and Vreman sub-grid models for Large-Eddy Simulations(LES)of turbulent flows are coupled within the present ***,the implicit LES are also presented to verify the effect of LES models.A parallel implementation strategy for the present framework is developed,and three canonical wall-bounded turbulent flow cases are investigated,including the fully developed turbulent channel flow at a friction Reynolds number(Re)about 180,the turbulent plane Couette flow at a friction Re number about 93 and lid-driven cubical cavity flow at a Re number of *** turbulence statistics,including mean velocity,the *** velocity,Reynolds stress,*** computed by the present *** predictions match precisely with each other,and they are both in reasonable agreement with the benchmark data of ***,the predicted flow physics of three-dimensional lid-driven cavity flow are consistent with the description from abundant *** present numerical results verify that the present two-stage third-order DUGKS-based LES method is capable for simulating inhomogeneous wall-bounded turbulent flows and getting reliable results with relatively coarse grids.