Nonlinear galerkin method and subgrid-scale model for two-dimensional turbulent flows

1992 ◽  
Vol 3 (5) ◽  
pp. 267-284 ◽  
Author(s):  
Fr�d�ric Pascal ◽  
Claude Basdevant
Keyword(s):  
Galerkin Method ◽  
Turbulent Flows ◽  
Scale Model ◽  
Two Dimensional ◽  
Subgrid Scale ◽  
Nonlinear Galerkin Method ◽  
Subgrid Scale Model

An Energy-Based Similarity Subgrid-Scale Model in Two-Dimensional Planar Shear Flow

2013 ◽  
Vol 694-697 ◽  
pp. 594-600
Author(s):  
Yu Xuan Zhang ◽  
Song Ping Wu
Keyword(s):  
Shear Flow ◽  
Scale Model ◽  
Two Dimensional ◽  
Subgrid Scale ◽  
Planar Shear ◽  
New Type ◽  
Subgrid Scale Model ◽  
Layer Flow ◽  
Refined Grid ◽  
Dissipative Scale

A new type of similarity subgrid-scale (SGS) model which based on energy and dissipative scale isotropy assumption is presented. This model combines the advantages of traditional Smagorinsky SGS model with similarity SGS model. And a two-dimensional shear layer flow is simulated using refined grid result as a standard and comparing witch LES method including multiple SGS models. The results indicate that the result of SIM model much approximates to refined grid result than other SGS models.

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