Large eddy simulation with sub-grid stress determined by molecular simulation and its applications for turbulent channel flows

被引：0

作者：

Zeng, Dandan ^{[1
]}

Zhong, Fengquan ^{[1
]}

Fan, Jing ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China

来源：

FRONTIERS IN FLUID MECHANICS RESEARCH | 2015年 / 126卷

关键词：

Turbulent channel flow; large eddy simulation; molecular statistics; diffusive information preservation;

D O I：

10.1016/j.proeng.2015.11.184

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this paper, a novel simulation method of turbulence by solving filtered Navier-Stokes equations based on LES methodology and calculating the sub-grid scale stress with D-IP method is developed. Compared to the sub-grid scale models used in LES method with Boussinesq assumption, the sub-gird scale stress of the LES-DIP method is directly estimated based on statistics of molecule motions. To validate the LES-DIP method, turbulent channel flow at different Reynolds numbers of Re-tau = 180, 390 and 590 are simulated. The results are found to be in agreement with those of DNS with much smaller computational cost. (C) 2015 Published by Elsevier Ltd.

引用

页码：88 / 92

页数：5