Scale-adaptive subgrid-scale modelling for large-eddy simulation of turbulent flows

2017 ◽  
Vol 29 (3) ◽  
pp. 035101 ◽  
Author(s):  
Changping Yu ◽  
Zuoli Xiao ◽  
Xinliang Li
Keyword(s):  
Large Eddy Simulation ◽  
Turbulent Flows ◽  
Subgrid Scale ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Scale Modelling

scholarly journals Physical consistency of subgrid-scale models for large-eddy simulation of incompressible turbulent flows

2017 ◽  
Vol 29 (1) ◽  
pp. 015105 ◽  
Author(s):  
Maurits H. Silvis ◽  
Ronald A. Remmerswaal ◽  
Roel Verstappen
Keyword(s):  
Large Eddy Simulation ◽  
Turbulent Flows ◽  
Subgrid Scale ◽  
Eddy Simulation ◽  
Scale Models ◽  
Large Eddy

scholarly journals Toward the large-eddy simulation of compressible turbulent flows

1992 ◽  
Vol 238 ◽  
pp. 155-185 ◽  
Author(s):  
G. Erlebacher ◽  
M. Y. Hussaini ◽  
C. G. Speziale ◽  
T. A. Zang
Keyword(s):  
Large Eddy Simulation ◽  
Linear Combination ◽  
Turbulent Flows ◽  
Isotropic Turbulence ◽  
Collocation Methods ◽  
Subgrid Scale ◽  
Fine Grid ◽  
Eddy Simulation ◽  
Scale Models ◽  
Large Eddy

New subgrid-scale models for the large-eddy simulation of compressible turbulent flows are developed and tested based on the Favre-filtered equations of motion for an ideal gas. A compressible generalization of the linear combination of the Smagorinsky model and scale-similarity model, in terms of Favre-filtered fields, is obtained for the subgrid-scale stress tensor. An analogous thermal linear combination model is also developed for the subgrid-scale heat flux vector. The two dimensionless constants associated with these subgrid-scale models are obtained by correlating with the results of direct numerical simulations of compressible isotropic turbulence performed on a 963 grid using Fourier collocation methods. Extensive comparisons between the direct and modelled subgrid-scale fields are provided in order to validate the models. A large-eddy simulation of the decay of compressible isotropic turbulence – conducted on a coarse 323 grid – is shown to yield results that are in excellent agreement with the fine-grid direct simulation. Future applications of these compressible subgrid-scale models to the large-eddy simulation of more complex supersonic flows are discussed briefly.

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