Performance of Reynolds-averaged turbulence and scalar-flux models in complex turbulence with flow impingement

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Abstract

The present paper is a contribution to the ongoing search for better Reynolds-averaged turbulence and scalar-flux models. In this study, several combinations of velocity- and scalar-field models were investigated. Recently-developed algebraic NLEVMs generally provide reasonable turbulence properties for the present test cases. A quadratic extension of the GGDH model (quadratic model) was very effective in improving the prediction accuracy of the streamwise scalar flux in wall-shear flows. On the other hand, the GGDH model has shown an advantage in predicting the scalar transfer in the stagnation region. Therefore, a combined form of the GGDH and quadratic models was discussed.

Original languageEnglish
Pages (from-to)79-88
Number of pages10
JournalProgress in Computational Fluid Dynamics
Volume6
Issue number1-3
DOIs
Publication statusPublished - 2006

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Computer Science Applications

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