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 κ – ε turbulence model and the agreement with the data is poor.

Issue Section:
Jets, Wakes, and Impingement
Keywords:
Computer Codes, Jets, Modeling and Scaling, Thermal Packaging, Turbulence
Topics:
Computers, Cooling, Electronic components, Engineering systems and industry applications, Flat plates, Geometry, Heat transfer coefficients, Heating, Jets, Modeling, Packaging, Relaxation (Physics), Reynolds number, Turbulence, Turbulent heat transfer
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