A new dynamic one‐equation subgrid‐scale model for large eddy simulations
作者： Shenghong Huang , Q. S. Li
DOI: 10.1002/NME.2715
关键词: Computational fluid dynamics 、 Physics 、 Scale model 、 Turbulence 、 Discretization 、 Reynolds number 、 Turbulence modeling 、 Large eddy simulation 、 Mesh generation 、 Statistical physics
摘要: A new dynamic one-equation subgrid-scale (SGS) model is presented for large eddy simulations of turbulent flows. The model, combining both advantages the SGS (J. Appl. Mech. (ASME) 2006; 73:368–373) and wall-adapting local viscosity (Turbulence Combustion 1999; 62:183–200), has three prominent features: (1) suitable relatively coarse grid situations simulation high Reynolds number flows; (2) no test-filtering operation needed in determination parameters, low-order numerical discretization unstructured or hybrid situations; (3) treating production kinetic energy loss grid-scale (GS) portion due to motion with different mechanisms, which considered be more reasonable than instantaneous mechanism as adopted by most existing models. Computational examinations have been conducted flows ranging from 3000–70000, revealing that there are promising aspects model: adaptability a wide range flow regime; less dependence; potential applications complex geometries Copyright © 2009 John Wiley & Sons, Ltd.
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