Partially averaged navier stokes: A new turbulence model for unsteady flows with application to acoustics Conference Paper uri icon

abstract

  • Flow past a backward facing step is computed using three different turbulence modeling approaches; Detached Eddy Simulation (DES), Unsteady Reynolds Averaged Navier-Stokes (URANS) and a newly developed Partially Averaged Navier-Stokes (PANS) [1]. The computational results are compared to existing experimental data. We found that overall PANS' results are in better agreement with experimental data. In addition, we investigate the effect of f on the results in the wall-bounded region of the flow. We found that for a given f k and grid resolution, an optimal value of f can be obtained from well-established scaling laws. Overall, the results clearly show the power of PANS at resolving unsteady turbulent flows with a much lower grid resolution than DES or LES. Copyright 2005 by the American Institute of Aeronautics and Astronautics, Inc. All rights reserved.

published proceedings

  • Collection of Technical Papers - 11th AIAA/CEAS Aeroacoustics Conference

author list (cited authors)

  • Tosh, A., Frendi, A., & Girimaji, S.

complete list of authors

  • Tosh, A||Frendi, A||Girimaji, S

publication date

  • December 2005