Predictions of turbulent heat transfer in an axisymmetric jet impinging on a heated pedestal

S. Parneix*, M. Behnia, P. A. Durbin

*Corresponding author for this work

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Cooling or heating of a flat plate by an impinging jet, due to its many applications, has been widely studied. Recent experimental data concerning more complex geometries has become available. In this study, the cooling of a heated pedestal mounted on a flat plate, a configuration which is closer to the one met in some engineering applications (e.g., cooling of electronic components), has been numerically simulated. The normal velocity relaxation turbulence model ( V2F model) in an axisymmetric geometry has been adopted. Results have been obtained for a range of jet Reynolds numbers and jet-to-pedestal distances. Comparison of the predicted heat transfer coefficient with experiments has shown a very good agreement. For comparison, results have also been obtained with the widely used k-ε turbulence model and the agreement with the data is poor.

Original languageEnglish
Pages (from-to)43-48
Number of pages6
JournalJournal of Heat Transfer
Volume121
Issue number1
Publication statusPublished - 1999
Externally publishedYes

Keywords

  • Computer codes
  • Jets
  • Modeling and scaling
  • Thermal packaging
  • Turbulence

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