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Published in:
2010 | OriginalPaper | Chapter
Application of a New Roughness Extension for k − ω Turbulence Models
Authors : Bernhard Eisfeld, Tobias Knopp, Javier Bartolome Calvo
Published in: New Results in Numerical and Experimental Fluid Mechanics VII
Publisher: Springer Berlin Heidelberg
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The roughness extension of Knopp, Eisfeld and Calvo (KEC) [4] for
k
–
ω
type turbulence models has been applied to the flow through rough pipes, over a flat plate and around the NACA 65
2
-215 airfoil with a rough surface. The results are compared to predictions using the boundary condition originally devised by Wilcox [11] for rough surfaces, and to predictions with the Spalart-Allmaras model with the Boeing roughness extension by Aupoix and Spalart (ASB) [2]. Good agreement with experiments has been achieved with respect to the influence of the roughness on the velocity profile, the skin friction coefficient and the loss in lift.