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Solving two coupled 1D governing equations
Posted Jul 8, 2020, 8:51 a.m. EDT Chemical Reaction Engineering, Equation-Based Modeling Version 5.5 1 Reply
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Hello, I want to solve two coupled 1D governing equations for solute transport in a fracture-matrix system. The equations are written in the attached document. I know that this problem can be sovled by applying the interface of "transport of diluted species in porous media". However, I want to use the interface in "Mathematics" for a trial. The problem I met is that I do not know how to handle the coupling term in the equation in COMSOL. I think that I may treat it as a source term but this source term is dependent on location, which I have no idea how to implement in COMSOL. Could you help me how to deal with this issue? Many thanks in advance! Shuo Meng
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Hello Shuo,
You can use a nonlocal coupling of the integration type defined at the point z=b. Applied to cpz, that will return 
.
Best,
Jeff
-------------------Jeff Hiller