Large eddy simulation of turbulent incompressible flows by a three-level finite element method

被引：46
|
作者：
Gravemeier, V
Wall, WA
Ramm, E
机构：
[1] Tech Univ Munich, Chair Computat Mech, D-85747 Garching, Germany
[2] Stanford Univ, Ctr Turbulence Res, Stanford, CA 94305 USA
[3] Univ Stuttgart, Inst Struct Mech, D-70550 Stuttgart, Germany
来源：
INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN FLUIDS | 2005年 / 48卷 / 10期
关键词：
large eddy simulation; variational multiscale method; three-level finite element method; dynamic subgrid-scale modelling; residual-free bubbles;
D O I：
10.1002/fld.961
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
The variational multiscale method provides a methodical framework for large eddy simulation of turbulent flows. In this work, a particular implementation in the form of a three-level finite element method separating large resolved, small resolved, and unresolved scales is proposed. Residual-free bubbles are used for the numerical approximation of the small-scale momentum equation. A stabilizing term is added, in order to take into account the effect of the small-scale continuity equation. This implementation guarantees the stability of the method without further provisions and offers substantial computational savings on the small-scale level. Furthermore, it is accounted for the unresolved scales by a specific dynamic modelling procedure. The method is tested for two different turbulent flow situations. Copyright (c) 2005 John Wiley & Sons, Ltd.
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页码：1067 / 1099
页数：33
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