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 language | English |
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Pages (from-to) | 677-682 |
Number of pages | 6 |
Journal | Journal of Thermal Engineering |
Volume | 2 |
Issue number | 2 |
DOIs | |
Publication status | Published - 1 Apr 2016 |
Keywords
- Convection
- Experiment
- Forchheimer
- Fully developed
- Metal foam