2011. - V. 25. - N 1(117). - P. 22-26
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Under study is the model that describes the transportation of gas in small sized pores. There are two types of mass-transport occurring inside the pore: Knudsen diffusion and molecular diffusion. The movement and interaction of molecules are described through the model of hard spheres. Molecules move according to the laws of classical mechanics and interact with 23 each other, as well as with the wall, on the basis of the absolutely elastic collision. The diffusion coefficients calculated by this way give the correct order and ensure the accuracy, comparable to precision in the calculation of the Knudsen formula.
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