( User21 Edit: If you are interested in the usage of the various iterative and direct solvers, one can find documentation about them here. On one hand, this makes it more flexible, but on the other hand for a user like I am who has no idea on which solver/preconditioner to use in what case - it transforms the life into a nightmare. What may also be of interest are the verification tests for the nonlinear solver found here.įurther, Comsol has a number of solvers, and in addition to them a number of preconditioners. For the exact details of the implementation of the nonlinear solver look here. An overview capabilities of the nonlinear solver can be found here, some of the examples are explained in more detail here. A nonlinear FEM solver has been added in Version 12.0. In MMA it can only be overcome for time dependent PDEs when the MethodOfLines can be used. The strongest feature of Comsol is that it has a nonlinear solver, while MMA still does not. First about strong features of Comsol with respect to Mathematica (MMA): The specificity is that I am not at all a specialist in numerical methods, but rather a user in this area, a physicist who needs to solve equations. I can give a specific opinion on the comparison.
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