Consumption of species
Hello everyone, I have a question because I'm not quite sure how to model it. I have a reactor (square) which contains a chemical component A. A can react to B with the help of a catalyst. I want to...
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Add a reaction term to the diffusion equation: dcA/dt = DA*nabla^2 cA + R R = -k*cA or whatever reaction term that is pertinent to your reaction. br Lasse
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Hi Lasse, thank you for your fast reply. But I still have an understanding problem. i know that I can add a reaction term for my diffusion but how does COMSOL know that the consumption only takes place...
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When you define the reaction term, you must click the domain where you want it to take place. Otherwise it won't have any effect on the calculation. Lasse
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Hi Lasse, I did a mistake in my last answer, I wanted to say boundary instead of domain, sorry. I know that I have to select the domain and that's where I have trouble because my reactor is a square....
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OK, now I see. If a reaction takes place on the boundary, then it is not written as a reaction term in the diffusion equation, but as a flux boundary condition. Inward flux: -k*cA but now notice that...
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Thank you Lasse, really appreciate your help. So if I understood it correctly. For the species B which gets created at the boundary I can just do the same with an inward flux, right?
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Hi, I am solving the coupling of poisson equation and current continuity equations in the Transport of Diluted Species, However, what I am confused is that whether the right source term of the...
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