Abstract: | A structural model and an approximate method for calculating the permeability of porous materials are proposed.Notation q volumetric flow rate of fluid - l, h, L, S width, thickness, length, and cross-sectional area of material - p pressure drop - coefficient of absolute viscosity - k, k1, k2 permeabilities - m1, m2 volume concentrations of components - Rt, Re, Rf thermal, electrical, and filtration resistances - , thermal and electrical conductivities - c parameter - mean pore diameter - sinuousness - d fiber diameterTranslated from Inzhenerno-Fizicheskii Zhurnal, Vol. 41, No. 3, pp. 421–427, September, 1981. |