Detached-eddy simulation with compressibility corrections applied to a supersonic axisymmetric base flow

James R. Forsythe, Klaus A. Hoffmann, Russell M. Cummings, Kyle Squires

Research output: Contribution to journalArticle

128 Scopus citations

Abstract

Detached-eddy simulation is applied to an axisymmetric base flow at supersonic conditions. Detached-eddy simulation is a hybrid approach to modeling turbulence that combines the best features of the Reynolds-averaged Navier-Stokes and large-eddy simulation approaches. In the Reynolds-averaged mode, the model is currently based on either the Spalart-Allmaras Turbulence model or Menter's shear stress transport model; in the large-eddy simulation mode, it is based on the Smagorinski subgrid scale model. The intended application of detached-eddy simulation is the treatment of massively separated, high-Reynolds number flows over complex configurations (entire aircraft, automobiles, etc.). Because of the intented future application of the methods to complex configurations, Cobalt, an unstructured grid Navier-Stokes solver, is used. The current work incorporates compressible shear layer corrections in both the Spalart-Allmaras and shear stress transport-based detached-eddy simulation models. The effect of these corrections on both detached-eddy simulation and Reynolds-averaged Navier-Stokes models is examined, and comparisons are made to the experiments of Herrin and Dutton. Solutions are obtained on several grids - both structured and unstructured - to test the sensitivity of the models and code to grid refinement and grid type. The results show that predictions of base flows using detached-eddy simulation compare very well with available experimental data, including turbulence quantities in the wake of the axisymmetric body.

Original languageEnglish (US)
Pages (from-to)911-923
Number of pages13
JournalJournal of Fluids Engineering, Transactions of the ASME
Volume124
Issue number4
DOIs
StatePublished - Dec 1 2002

ASJC Scopus subject areas

  • Mechanical Engineering

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