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Old   May 26, 2009, 09:54
Default molecular diffusion
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I would like to make a simulation of molecular diffusion in closed tube. There are two gases, helium - up and nitrogen - down each in half of the tube. I want to know the mole fractions of diffusing nitrogen in various elevations as a function of time. Does anybody knows how to define the boundary conditions, model and solver to get any results?
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