Implicit LES of compressible turbulent flow over a backward-facing step

Keiichi Ishiko, Kazuyuki Ueno, Keisuke Sawada

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

An implicit LES code utilizing the Weighted Compact Nonlinear Scheme is developed for 3D compressible Navier-Stokes equations written on generalized curvilinear coordinate system. A supersonic flowfield over a backward-facing step in three-dimensional space is then solved by the developed implicit LES code. It is shown that characteristic features of the flowfield pertinent to a supersonic flow over a backward-facing step are well captured in the computed results. Number of longitudinal vortices appears in the boundary layer region suggesting that the flowfield behind the step becomes turbulent. A fair agreement is shown for the computed pressure profile behind the step with that of the experimental data. However, comparison with the experimental data reveals that the pressure value in recirculation region becomes slightly higher and the onset of the pressure rise is slightly shifted downstream side.

Original languageEnglish
Title of host publication47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition
PublisherAmerican Institute of Aeronautics and Astronautics Inc.
ISBN (Print)9781563479694
DOIs
Publication statusPublished - 2009 Jan 1

Publication series

Name47th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition

ASJC Scopus subject areas

  • Space and Planetary Science
  • Aerospace Engineering

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