There are many different approaches. Which have to be programmed manually, and nobody wants to do it. For Microstructures containing some grains Multiphase field approaches are the favourites. (not in comsol). Dendritic growth simulation need thermodynmaics coupling containing a lot of data.
If you want to implement it, please tell me.
Kind Regards
If you want to implement it, please tell me.
Kind Regards