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Hi !

I'd like to use a phase field model (meaning a potential like Cahn-Hilliard with interface energy) but with mass transfer between the phases. Unfortunately, the Phase field Physics doesn't allow directly to do so, even now one can divide the nonconservative convection term by phipfx and phipfy, but still, the potential is imposed and sometimes I'd like to change it a little bit. (Another point is that in the ternary phase field there is apparently no possibility to implement a non-conservative flux, which is annoying if you want to introduce another field.)

I tried to do it with the Mixture Model Physics, and with the Stabilized Convection Diffusion Equation but nothing gave me a satisfying result. I'm not satisfied with the sizes of the interfaces, and also the fact the the mesh is too apparent in the patterns. I tried to implement an adaptative mesh but it's very very slow and until now it has never really converge.

Have you ever tried to do something similar ? If not would you have an idea how to do it ?

Thank you in advance

Joseph