EFFECT OF TURBULENCE MODELS AND NEAR-WALL MODELING APPROACHES ON NUMERICAL RESULTS IN IMPINGEMENT HEAT TRANSFER


PULAT E. , Isman M. K. , ETEMOĞLU A. B. , Can M.

NUMERICAL HEAT TRANSFER PART B-FUNDAMENTALS, vol.60, no.6, pp.486-519, 2011 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 60 Issue: 6
  • Publication Date: 2011
  • Doi Number: 10.1080/10407790.2011.630956
  • Title of Journal : NUMERICAL HEAT TRANSFER PART B-FUNDAMENTALS
  • Page Numbers: pp.486-519

Abstract

In this study, turbulence models and near-wall modeling approaches were compared in impingement heat transfer. The Reynolds-averaged Navier-Stokes (RANS) turbulence models were compared using three near-wall modeling approaches. Moreover, the effect of near-wall modeling approaches on heat transfer was investigated and the predictions were compared with experiments. All computations were performed with the FLUENT code by considering two-dimensional, steady, and incompressible flow. Wall functions (WF) should be used carefully in conjunction with turbulence models, and the enhanced wall treatment (WT) is suggested for practical applications. The standard k-epsilon model showed the best agreement with the experimental data among the models used under the considered conditions.