Numerical Analysis of Eddy Viscosity Models in Supersonic Turbulent Boundary Layers

AIAA Journal ◽  
1973 ◽  
Vol 11 (12) ◽  
pp. 1677-1683 ◽  
Author(s):  
J. S. SHANG ◽  
W. L. HANKEY ◽  
D. L. DWOYER
Keyword(s):  
Numerical Analysis ◽  
Boundary Layers ◽  
Eddy Viscosity ◽  
Turbulent Boundary Layers ◽  
Viscosity Models

Simple eddy viscosity relations for three-dimensional turbulent boundary layers

AIAA Journal ◽  
1977 ◽  
Vol 15 (6) ◽  
pp. 886-887 ◽  
Author(s):  
George L. Mellor ◽  
H. James Herring
Keyword(s):  
Boundary Layers ◽  
Eddy Viscosity ◽  
Three Dimensional ◽  
Turbulent Boundary Layers

Eddy Viscosity in Turbulent Boundary Layers

1976 ◽  
Vol 27 (4) ◽  
pp. 270-276 ◽  
Author(s):  
M R Head
Keyword(s):  
Boundary Layers ◽  
Eddy Viscosity ◽  
Turbulent Boundary Layers ◽  
Physical Picture

SummaryObserved variations of eddy viscosity in the outer regions of turbulent boundary layers are here explained in terms of the reorientation and stretching of vortex elements. The explanation, which is purely qualitative, gives a clear and plausible physical picture.

RANS Modelling of Accelerating Boundary Layers

2013 ◽  
Author(s):  
Ugochukwu R. Oriji ◽  
Paul G. Tucker
Keyword(s):  
Boundary Layers ◽  
Eddy Viscosity ◽  
Navier Stokes ◽  
Viscosity Models ◽  
Cubic Model ◽  
Rans Models ◽  
The One ◽  
Stress Models ◽  
Reynolds Average ◽  
Laminar State

A numerical investigation of accelerated boundary layers (BL) has been performed using linear and non-linear eddy viscosity models (EVM). The acceleration parameters (KS) investigated range between 1.5×10−6 and 3.0×10−6. The one equation (k-l), Spalart Allmaras (SA) and the two-equation Menter SST and Chien models in their standard forms are found to be insensitive to acceleration. Nevertheless, proposed modifications for the SA, Chien and the k-l models significantly improved predictions. The major improvement was achieved by modifying the damping functions in these models and also an analogous source term, E, for the Chien model. Encouraging agreement with measurements is found using the Launder Sharma (LS), Cubic and Explicit Algebraic Stress Models (EASM) in their standard forms. The cubic model best predicted the turbulence quantities. Investigations confirm that it is practical for Reynolds Average Navier-Stokes (RANS) models to capture reversion from the turbulent to laminar state albeit for equilibrium sink type flows.

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