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Mass flux boundary condition
Posted 21 lug 2012, 15:58 GMT-4 Chemical Reaction Engineering, Materials, Parameters, Variables, & Functions Version 4.2, Version 4.3b 1 Reply
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I'm using Comsol 4.2 building a model using "Transport of Concentrated Species" module. I need to set a boundary condition of mass flux, which has an expression like:
-Di d(Ci)/dx = n
Where Di is the diffusion coefficient for species i
Ci is the concentration of species i
n is a mathematical expression.
I thought of include it in the node "Flux" which is included in the transpor of concentrated species module. The problem is that I need the solution of that equation (i.e the concentration of species i (Ci) in that specific boundary) to put it in another equation (is a system of simultaneous differential equations) and I really don't know how to do it.
Anyone has an idea of how it can be done??
Any help would be appreciated
Hello Maria Fernanda Guzmán
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