Application of a New Roughness Extension for k − ω Turbulence Models

  • Bernhard Eisfeld
  • Tobias Knopp
  • Javier Bartolome Calvo
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 112)


The roughness extension of Knopp, Eisfeld and Calvo (KEC) [4] for kω type turbulence models has been applied to the flow through rough pipes, over a flat plate and around the NACA 652-215 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.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Bernhard Eisfeld
    • 1
  • Tobias Knopp
    • 2
  • Javier Bartolome Calvo
    • 1
  1. 1.Institute of Aerodynamics and Flow TechnologyGerman Aerospace Center (DLR)BraunschweigGermany
  2. 2.Institute of Aerodynamics and Flow TechnologyGerman Aerospace Center (DLR)GöttingenGermany

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