Undefined value found in the equation residual vector.
There are 1 degrees of freedom giving NaN/Inf in the vector for the variable comp1.Ph.
at coordinates: (9.6875e-09), ...
Dear Ta,
very likely the boundary conditions are not correctly applied, you have an underconstrained problem and your matrix is singular. Check the boundary conditions and consistency of your model definition.
Kind regards,
Julian
I would like to direct you to : https://www.researchgate.net/post/could_anyone_help_me_to_solve_this_problem_in_simulation_by_comsol
See also : https://www.comsol.fr/models
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