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Boundary condition for mass diffusion only

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Old   February 25, 2016, 19:46
Default Boundary condition for mass diffusion only
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How can I define boundary condition for modeling diffusion of one gas in another liquid (two different species)? Diffusion only, no velocity at inlet and no pressure difference, only concentration difference!! I really appreciate it if anybody can show me how it's done in Ansys Fluent or Star-CCM+
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ansys fluent, concentration difference, diffusion only, star-ccm+

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