3D numerical results are presented to compare the heat transfer augmentation from a plate by using pin fins and metal foams. It is observed that maximizing the inlet velocity and pores per inch maximizes the overall heat transfer rate. The thickness of the foam layer has minimal effect on overall rates of heat transfer, but great effect on the maximum plate temperature. It has been shown that an optimum thickness exists which minimizes the hot spot temperature. Hot spots are generally located in the corners where velocities are the lowest. While the pressure drop remains almost unaltered, the heat transfer increases by 146% and 12% compared with a smooth channel and the optimal pin-fin data available in the literature, respectively. Interestingly, the additional mass of the foams, to achieve this performance, is approximately one-quarter of the best pin-fin sink quoted above.
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November 2012
This article was originally published in
Journal of Heat Transfer
Technical Briefs
Heat Transfer Enhancement From a Blade Tip-Cap Using Metal Foams
Kamel Hooman
Kamel Hooman
1
e-mail: k.hooman@uq.edu.au
School of Mechanical and Mining Engineering,
School of Mechanical and Mining Engineering,
The University of Queensland
,Queensland 4072
, Australia
1Corresponding author.
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Kamel Hooman
e-mail: k.hooman@uq.edu.au
School of Mechanical and Mining Engineering,
School of Mechanical and Mining Engineering,
The University of Queensland
,Queensland 4072
, Australia
1Corresponding author.
Contributed by the Heat Transfer Division of ASME for publication in the JOURNAL OF HEAT TRANSFER. Manuscript received November 8, 2011; final manuscript received May 17, 2012; published online September 26, 2012. Assoc. Editor: Phillip M. Ligrani.
J. Heat Transfer. Nov 2012, 134(11): 114505 (3 pages)
Published Online: September 28, 2012
Article history
Received:
November 8, 2011
Revision Received:
May 17, 2012
Citation
Sengstock, O., and Hooman, K. (September 28, 2012). "Heat Transfer Enhancement From a Blade Tip-Cap Using Metal Foams." ASME. J. Heat Transfer. November 2012; 134(11): 114505. https://doi.org/10.1115/1.4007134
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