Abstract
Abstract A general formalism is presented for the combined diffusion and forced flow of a binary gas mixture through a porous medium. The resulting equations are then specialized to handle the vapor region of a porous material which is drying according to a receding evaporation front model. Solutions presented for various permeabilities and temperatures give the conditions under which air is present in the pores and allow one to investigate the usefulness of the ‘boiling’ concept for the drying of low permeability materials. Evaporation front motion together with the water loss rate is examined for different curvilinear geometries both analytically and numerically.
Published Version
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