Investigation of nonlinear eddy-viscosity turbulence models in shock/boundary-layer interaction

G. Barakos, D. Drikakis

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Validation of nonlinear two- and three-equation, eddy-viscosity turbulence models (NLEVM) in transonic flows featuring shock/boundary-layer interaction and separation is presented. The accuracy of the models is assessed against experimental results for two transonic flows over bump geometries. Moreover, the accuracy and efficiency of NLEVMs is also assessed in contrast to numerical predictions obtained by a variety of other models employed in this study. These include two linear eddy-viscosity k-ε models, the k-ω shear-stress transport model, and a nonlinear version of the k-ω model. Discretization of the mean flow and turbulence transport equations is obtained by a characteristics-based scheme (Riemann solver) in conjunction with an implicit unfactored method. The study shows that NLEVMs improve the numerical predictions in shock/boundary-layer interaction, compared to the linear models, but they require longer computing times.
Original languageEnglish
Pages (from-to)461-469
Number of pages9
JournalAIAA Journal
Volume38
Issue number3
DOIs
Publication statusPublished - 1 Mar 2000

    Fingerprint

Keywords

  • boundary layer flow
  • computer simulation
  • equations of motion
  • flow interactions
  • mathematical models
  • numerical analysis
  • shock waves
  • turbulent flow
  • viscous flow
  • nonlinear eddy-viscosity turbulence models
  • NLEVM
  • transonic flow
  • Riemann solver

Cite this