Wall-distance-free formulation for SST k-ω model

M. M. Rahman*, V. Vuorinen, J. Taghinia, M. Larmi

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

7 Citations (Scopus)

Abstract

Two different wdf (wall-distance-free) approaches are devised using local wall-distance and dissipation based representations to obtain consistency formulations for blending functions associated with the SST model. The strain-dependent coefficient C̄μ assists the SST model in constructing the functions such as to benefit complex flows with non-equilibrium turbulence, while retaining the predictive quality of unmodified SST closure. Naturally, the proposed methods allow the original SST model to be modified accurately and alleviate the free-stream dependency. Comparisons with the original SST k-ω model demonstrate that the newly developed alternatives to actual wall-distance usually improve the response of SST model to non-equilibrium effects.

Original languageEnglish
Pages (from-to)71-82
Number of pages12
JournalEuropean Journal of Mechanics, B/Fluids
Volume75
DOIs
Publication statusPublished - 1 May 2019
MoE publication typeA1 Journal article-refereed

Keywords

  • Blending functions
  • Non-equilibrium flow
  • SST turbulence model
  • Wall-distance-free
  • REYNOLDS-STRESS
  • TURBULENCE MODELS
  • ARTIFICIAL COMPRESSIBILITY METHOD
  • NEAR-WALL

Fingerprint

Dive into the research topics of 'Wall-distance-free formulation for SST k-ω model'. Together they form a unique fingerprint.

Cite this