effective Knudsen diffusivity

См. также в других словарях:

• Mass diffusivity — This article is about coefficient of molecular diffusion of mass. For other uses, see Diffusivity (disambiguation). Diffusivity or diffusion coefficient is a proportionality constant between the molar flux due to molecular diffusion and the… …   Wikipedia

• Gas separation — Gas mixtures can be effectively separated by synthetic membranes. For other methods see adsorption, absorption, cryogenic distillation. Membranes are employed in: * separation of hydrogen from gases like nitrogen and methane * recovery of… …   Wikipedia

• fluid mechanics — an applied science dealing with the basic principles of gaseous and liquid matter. Cf. fluid dynamics. [1940 45] * * * Study of the effects of forces and energy on liquids and gases. One branch of the field, hydrostatics, deals with fluids at… …   Universalium

• Weisz-Prater Criterion — The Weisz Prater Criterion is a method used to estimate the influence of pore diffusion on reaction rates in heterogeneous catalytic reactions. [Citation|last1=Weisz|first1=P. B.|last2=Prater|first2=C. D.|title=|journal=Advances in… …   Wikipedia