Pde coupled to an algebraic system through boundary equations

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Dear all,

I am pretty new to Fenics although I have a sense of what it is capable, somehow it looks similar to Comsol.
I would like to solve the Poisson-Boltzmann equation coupled to an algebraic system of equilibrium chemical reactions.
In Comsol I think it should be possible by using the “electrostatic” and the “boundary ODEs and DAEs” built-in physics.
I would like to know if such thing is also possible in Fenics. I have seen in the tutorials that the Poisson-Boltzmann (“Fundamentals: Solving the Poisson equation”). Is there another tutorial to couple AEs on the boundaries? Is it possible to do? how?

Thanks

Best regards,
Dani

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What have you tried so far? FEniCS is a general tool for the approximation of PDEs by the finite element method. It’s not a commercial black box like Comsol. It’s almost certain you can achieve what you want with FEniCS; however, you will have to put in the work.

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Thanks, so far I just wanted to know if it is possible. My idea would be to build first the model in Comsol, and then in Fenics using Comsol as a reference for comparison.

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