1986 Volume 12 Issue 5 Pages 595-602
The effect of microscopic temperature distribution upon local mass transfer rate in porous media such as a granular bed under a temperature gradient was investigated. Local temperature and mass transfer rate distributions were measured by model experiments, and the results were compared with analytical results calculated by the boundary element method.
Experimental results for two solid hemispheres of different thermal conductivities were fairly consistent with the calculated ones and it was shown that the local mass transfer rate in porous media under temperature gradient was characterized by a microscopic void temperature distribution induced by the difference in thermal conductivities of the solid and the void filled with air.
