Theoretical models of gas diffusion and permeation in microporous molecular

No abstract

No abstract

No abstract

NOTATION a a, a, A d = differential symbol f(a) 2 2b n no = diameter of the particle = geometric number mean diameter, GNMD = geometric mass mean diameter, GMMD = constant in the Cunningham correction (0.864) = frequency of size distribution = mean free path of gas molecules = mean free path of aerosol particles = number concentration, no. particles/cm3 = number concentration at time t = 0 n(a) N r V, = settling velocity, cm/s Greek Letters p = deposition loss constant, no. particles/s 7 = viscosity of the gaseous medium, poise K = Boltzmann constant 1.38 X ergs/"K p = linear dimension (microns), 1 0 -4 cm u9 = geometric standard deviation = inverse number concentration ( l / n ) , cms/no.= number concentration of particles of diameter a = total number of particles in the aerosol cloud = radius of the particle particles $ = polydispersity factor