Experimental fully-developed thermal convection for non-darcy water flow in metal foam

Nihad Dukhan*, Özer Bağci, Mustafa Özdemir, Levent Kavurmacioğlu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

Experimental heat transfer data for water flow in commercial open-cell aluminum foam cylinder heated at the wall by a constant heat flux, is presented. The foam had 20 pores per inch (ppi) and a porosity of 87%. The measurements included wall temperature along flow direction as well as average inlet and outlet temperatures of the water. Flow speeds were in the non-Darcy regimes (transitional and Forchheimer). Heat fluxes were 14,998 W/m2 and 26,347 W/m2. The behavior of the wall temperature clearly shows thermal fully-developed conditions. The experimental Nusselt number is presented as a function of axial distance in flow direction, and showed what seemed to be a periodic development. A correlation for the average Nusselt number as a function of flow Reynolds number is provided. The experimental data can be used for validation of other analytical solutions, numerical models and heat-exchange engineering designs based on metal foam.

Original languageEnglish
Pages (from-to)677-682
Number of pages6
JournalJournal of Thermal Engineering
Volume2
Issue number2
DOIs
Publication statusPublished - 1 Apr 2016

Keywords

  • Convection
  • Experiment
  • Forchheimer
  • Fully developed
  • Metal foam

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