计算力学学报Issue(5)：628-633,6.DOI:10.7511/jslx201405014
基于全局动态 Vreman 模型的复杂非定常湍流的大涡模拟
Dynamic global Vreman model for large eddy simulation of transient turbulent flow in complex geometry
摘要
Abstract
In the method for turbulent numerical simulation ,the large eddy simulation (LES) method can provide abundant information for a large vortex ,so it has gradually become an important method in the turbulent numerical simulation of the complex geometry and will continue to develop .To construct sub-grid stress model as accurately as possible to reflect the physical nature of the flow field characteristics is the most important issue for LES .Based on such a thought ,the subgrid-scale (SGS ) eddy-viscosity model developed by Vreman is tested in an Re=28 ,000 backward-facing step turbulent flow by compari-son to the experimental data .The new LES framework yields excellent agreement for the mean velocity and matches experimental data better than the traditional Smagorinsky-based SGS model .This appears to be the first test of this class of model to flows without any homogeneous flow directions and high Reyn-old complex turbulent flow .关键词
大涡模拟/有限体积法/后台阶流动/Vreman模型/Smagorinsky模型Key words
large eddy simulation/finite volume method/backward-facing step flow/Vreman model/Sma-gorinsky model分类
数理科学引用本文复制引用
王文全,闫妍,张立翔,郭亚昆..基于全局动态 Vreman 模型的复杂非定常湍流的大涡模拟[J].计算力学学报,2014,(5):628-633,6.基金项目
国家自然科学基金 （）
