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Convection, diffusion and reaction

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Old   October 25, 2008, 20:19
Default Convection, diffusion and reaction
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Hi I'm working with convection, diffusion and reaction of a gas in a porous media. For convection and diffusion only, CFX worked fine. Nowadays I try to work with convection diffusion and but I have problems to set k [s-1] (first order reaction), I don't know where and how to set it. Someone have a tutorial? Can you help me? Thanks
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