Example: How to create a custom BC, source, trap, etc
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Often users need to create their own custom models.
It would be good to show the process of inheriting from a FESTIM class to override some methods etc
Does this issue also include a custom Newton solver?
It could include it yes.
Although maybe the custom solver could have its own demo?
Initially I was more thinking cases where we want a specific formulation for extrinsic traps or things like this that require to override classes
Although maybe the custom solver could have its own demo?
Sure. I simply wanted to clarify this.
Thus, we need a dedicated issue for the Newton solver demo as well.
In fact there are several examples of when we need to do this:
- Modelling an enclosure (see this verification case): we had to override the
iteratemethod ofSimulation - Having a dirichlet BC from tabulated data (see this reply on Discourse)
- Having temperature from tabulated data (see the same reply)
- Making a custom boundary condition (see example with a custom recombination coefficient)
Maybe each of them could have its own demo
Actually we have the CustomFlux BC that already does a lot of stuff so many BCs are not the best example for this.
@jhdark was suggesting writing custom derived quantities like including advection for instance.