Experimental heat transfer due to oscillating water flow in open-cell metal foam

Ozer Bagcl, Nihad Dukhan*, Mustafa Ozdemir, Levent Ali Kavurmacloglu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

While studies concerning heat transfer due to oscillating air (and few other gases) flow in metal foam are available, heat transfer due to oscillating water flow in metal foam has not been offered in the literature. This paper presents characteristics of heat transfer of oscillating water flow in commercial open-cell metal-foam pipe that were obtained experimentally, most likely for the first time. One main difference between gas and liquid flows in porous media is that dispersion is far more significant in the latter. Another difference is the length of the entrance region, which depends strongly on the Prandtl number. The trends in the cycle-averaged wall temperature, length-averaged wall temperature and cycleaveraged Nusselt number were similar to those for oscillating water flow in packed spheres and for oscillating air flow in aluminum, copper and graphite foams in a rectangular channel. For the higher flow frequency of the current study, the cycle-averaged Nusselt number was higher for higher flow displacement amplitude.

Original languageEnglish
Pages (from-to)48-58
Number of pages11
JournalInternational Journal of Thermal Sciences
Volume101
DOIs
Publication statusPublished - 1 Mar 2016

Bibliographical note

Publisher Copyright:
© 2015 Elsevier Masson SAS.

Funding

This work was supported by the Scientific & Technological Research Council of Turkey (TUBİTAK) under program 2221: 1059B211404522 , for which the authors are very thankful.

FundersFunder number
Scientific & Technological Research Council of Turkey
TUBİTAK1059B211404522

    Keywords

    • Electronic cooling
    • Metal foam
    • Oscillating heat transfer
    • Porous media
    • Regenerator

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