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Thermal analysis of a metal foam subject to jet impingement

Authors
Journal
International Communications in Heat and Mass Transfer
0735-1933
Publisher
Elsevier
Volume
39
Issue
7
Identifiers
DOI: 10.1016/j.icheatmasstransfer.2012.05.021
Keywords
  • Jet Impingement
  • Metal Foam
  • Porous Heat Sink
  • Infrared Thermography Imaging
  • Temperature Contour
Disciplines
  • Physics

Abstract

Abstract The present study conducted a thermal analysis on a FeCrAlY foam subjected to jet impingement cooling in a horizontal channel. The temperature distribution of the metal foam is captured with infrared thermography imaging camera for different jet velocities (219.5≤Pe≤548.9). Two dimensional numerical studies have been conducted to obtain the temperature contour of the metal foam and compared to the thermographic images. The thermographic images show inconsistencies in temperature variation across the metal foam due to the porosity within the metal foam. The temperature contours of the metal foam obtained numerically are found to be similar to the thermographic images. The top portion of the metal foam directly impinged by the jet of low velocities shows lowest temperature, but the heat near the heated surface is transferred majorly through conduction.

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