Investigation of laminar to turbulent transition phenomena effects on impingement heat transfer


İŞMAN M. K. , Morris P. J. , Can M.

HEAT AND MASS TRANSFER, vol.52, no.10, pp.2027-2036, 2016 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 52 Issue: 10
  • Publication Date: 2016
  • Doi Number: 10.1007/s00231-015-1719-8
  • Journal Name: HEAT AND MASS TRANSFER
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.2027-2036
  • Bursa Uludag University Affiliated: Yes

Abstract

Turbulent impinging air flow is investigated numerically by using the ANSYS-CFXA (R) code. All computations are performed by considering three-dimensional, steady, and incompressible flow. Three different Reynolds averaged Navier-Stokes (RANS) turbulence models and two Reynolds stress models (RSM's) are employed. Furthermore three different laminar to turbulent transition (LTT) models are employed with the shear stress transport (SST) and the baseline (BSL) models. Results show that predictions of the SST and two RSM's are very close each other and these models' results are in better agreement with the experimental data when all Reynolds numbers used in this study are considered. Secondary maxima in Nusselt number can be seen only if the LTT formula is employed with SST and BSL models.