This paper presents the experimental results for steady-state natural convection heat transfer in a rectangular enclosure. The enclosure was divided vertically with an impermeable partition into a fluid-saturated porous region and a fluid-filled region. The horizontal boundaries of the enclosure were adiabatic and the vertical boundaries were isothermal. Experimental runs were carried out for different porous materials, Rayleigh numbers, and thicknesses of the porous region. The results verified an earlier prediction that the heat transfer could be minimized by partially filling the enclosure with a porous material rather than filling it entirely. A correlation has been developed expressing the Nusselt number in terms of the relevant governing parameters.
ASJC Scopus subject areas
- Condensed Matter Physics