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Solver Configuration for Nonlinear Highly Coupled Fluid Flow Chemical Reaction Model

Posted 26 mars 2014, 00:44 UTC−4 Studies & Solvers 0 Replies

Melissa Tweedie
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Good Evening,

I've been working with Comsol for the last four months trying to model a system using the Free and Porous Media Flow module coupled with the Concentrated Species module (along with the Heat Transfer and poisson equations for electrical potential however those are currently not of concern and assumed to be disabled or constants ie. T=const).

The two primary modules above converge nicely without the addition of chemical reactions however once chemical reactions are added into the flowfield and porous media it is unable to converge. I have tried making the mesh finer,inner parametric steps, segregated solver and many configurations for iterative solvers however I am unable to attain convergence. If someone could take a look that would be great.

Thanks,
Melissa
0 Replies Last Post 26 mars 2014, 00:44 UTC−4
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Hello Melissa Tweedie

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