Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
669173 | International Journal of Thermal Sciences | 2015 | 10 Pages |
Abstract
The unsteady laminar flow and forced convection heat transfer have been numerically investigated across the porous square cylinder with the heated cylinder bottom at the axis in the channel changing cylinder-to-channel height ratio of 10%, 30%, and 50%. The other parameters include Reynolds number (50∼250), Darcy number (10−6∼10−2), and porosity (0.4∼0.8). The pressure drops are also examined for the flow past the porous square cylinder in the channels for all cases. The results indicate that the heat transfer for the square porous cylinder is enhanced as cylinder-to-channel height ratio increases; in particular, the enhancement is more obvious for a higher Darcy number and porosity.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Fluid Flow and Transfer Processes
Authors
Shiang-Wuu Perng, Horng-Wen Wu, Ren-Hung Wang, Tswen-Chyuan Jue,