Variational multiscale turbulence modelling in a high order spectral element method

JOURNAL OF COMPUTATIONAL PHYSICS

卷:228

Article

Wasberg, Carl Erik¹  Gjesdal, Thor¹  Reif, Bjorn Anders Pettersson¹  Andreassen, Oyvind¹ 

[1] Norwegian Def Res Estab FFI, NO-2027 Kjeller, Norway

关键词: Large eddy simulation;    Variational multiscale method;    Spectral element method;    Incompressible turbulent flow;   

DOI  :  10.1016/j.jcp.2009.06.029

来源: Elsevier

【 摘 要 】

In the variational multiscale (VMS) approach to large eddy simulation (LES), the governing equations are projected onto an a priori scale partitioning of the solution space. This gives an alternative framework for designing and analyzing turbulence models. We describe the implementation of the VMS LES methodology in a high order spectral element method with a nodal basis, and discuss the properties of the proposed scale partitioning. The spectral element code is first validated by doing a direct numerical simulation of fully developed plane channel flow. The performance of the turbulence model is then assessed by several coarse grid simulations of channel flow at different Reynolds numbers. (C) 2009 Elsevier Inc. All rights reserved.

【 授权许可】

Free