A numerical investigation into the effect of thermos-physical properties on the heat transfer characteristics in a porous channel filled with spherical beads and Freon-113 is presented in this paper. Temperature gradient was created between the channel vertical walls by differential heating while the working fluid pumped through the porous materials from the channel bottom (ingress) and exits through the top (egress). A series of simulations were conducted to evaluate the influence of the spore spaces and the thermal conductivity of the porous materials using three different spherical glass beads size (3 mm, 5 mm and 6 mm in diameter) and spherical chrome steel beads of 6.35 mm in diameter. The inlet velocity of the Freon-113 was varied in a range of high and low Reynolds numbers 2×10^3<Re_h<17×10^3 and 5.5×10^(-4)<Re_h<6.5×10^(-4) respectively for all the simulations. Transverse temperature profiles in the packed channel and the corresponding heat transfer where evaluated and analysed. It was observed that at low Reynolds number, the heat transfer varied slightly by regions dominated by conduction heat transfer and become proportional at high Reynolds number where convection dominates. In additions, the increment in the spore spaces cause an increase in the heat transfer, while there was no significant change in the heat transfer with varying thermal conductivity of the porous media. Based on numerical results for the Freon-113, a correlation was developed for the Nusselt number as a function of the Reynolds number, Prandtl number and Darcy number
|Number of pages||14|
|Publication status||Submitted - 2019|
Iyi, D., Balogun, Y., Oyeneyin, B., & Faisal, N. (2019). Numerical Investigation of the Effect of Thermo-physical Properties on the Heat Transfer in a Vertical Porous Channel. Manuscript submitted for publication.