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Efficient Flow Computation Including Turbulent Transport

  • C. -C. Rossow
  • R. C. Swanson
Part of the Notes on Numerical Fluid Mechanics and Multidisciplinary Design book series (NNFM, volume 112)

Summary

Runge-Kutta/Implicit methods for the solution of the Navier-Stokes equations provide superior convergence rates, especially when combined with a multigrid framework. In previous investigations [7,8,10], the algebraic model of Baldwin and Lomax [1] was employed as turbulence model. In the present contribution, this model is replaced by the model of Spalart and Allmaras [9], where an additional partial differential equation has to be solved. The design of an appropriate solution strategy to solve this additional equation and account for the necessary coupling to the system of main flow equations to maintain the favorable convergence rates of the basic scheme are outlined and discussed. Different cases of turbulent subsonic and transonic flow around airfoils are considered to assess the convergence properties of the resulting algorithm. Comparison with results of previous investigations confirms that the high efficiency of the basic Runge-Kutta/Implicit method is not impaired when adding an equation for turbulent transport.

Keywords

Fine Mesh Incompressible Flow Turbulent Transport Main Equation Transonic Flow 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • C. -C. Rossow
    • 1
  • R. C. Swanson
    • 2
  1. 1.DLRInstitut für Aerodynamik und StrömungstechnikBraunschweigGermany
  2. 2.NASA Langley Research CenterHamptonUSA

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