A fully coupled RANS Spalart-Allmaras SUPG formulation for turbulent compressible flows on stretched-unstructured grids

被引：11
|
作者：
Wervaecke, C. [1 ]
Beaugendre, H. [2 ,3 ,4 ]
Nkonga, B. [5 ]
机构：
[1] Off Natl Etud & Rech Aerosp, Dept Aerodynam Appl, Meudon, France
[2] Univ Bordeaux, IMB, UMR 5251, F-33400 Talence, France
[3] CNRS, IMB, UMR 5251, F-33400 Talence, France
[4] INRIA, Equipe Projet BACCHUS, F-33400 Talence, France
[5] Univ Nice, INRIA Sophia Antipolis Equipe Projet PUMAS, F-06108 Nice 2, France
来源：
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING | 2012年 / 233卷
关键词：
Turbulence; Stabilized finite element method; SUPG; Unstructured grids; High aspect ratio; High order scheme; FINITE-ELEMENT FORMULATION; COMPUTATIONAL FLUID-DYNAMICS; ADVECTIVE-DIFFUSIVE SYSTEMS; INCOMPRESSIBLE FLOWS; STABILIZED METHODS; EDDY SIMULATION; SHEAR-LAYER; VARIABLES; EQUATIONS; SCHEMES;
D O I：
10.1016/j.cma.2012.04.003
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
When high Reynolds turbulent flows are combined with complex and large size geometries, computers are no longer enough powerful to deal with Direct Numerical Simulation (DNS) and with the resolution of all the scales of turbulence motion. Therefore, the RANS approaches solve averaged equations and use a model to simulate these scales. This model contains dissipation processes that should not be polluted by the numerical diffusion needed to stabilized approximations for convection-dominated flows. In this paper, we proposed a strongly coupled numerical formulation for the Spalart-Allmaras model, in the framework of stabilized finite element methods. Computations are performed for compressible Newtonian fluids (2D and 3D) on unstructured grids of high aspect ratio. Results are compared with experimental data and also with solutions obtained by different numerical strategies. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：109 / 122
页数：14
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