I didn't find examples in the model libraries that can be referd to. Does anyone can recommend some references to me to read about how to simulate solidification using the phase-field method in COMSOL?
There are introduction about the phase-field method in comsol document, but I find that the equations gived by comsol are different from that in papers (I download some papers about simulation of solidification or crystallization using Phase-field method) . I don't why.
Hi,
There are many approaches available in the open literature for the Numerical simulation of solidification process. For instance, you can see the paper `` Mathematical modeling of solidification and Melting : a review ``. However, I found that the ``Enthalpy-Porosity method`` is used by many researchers for solidification. But similar type of approach is not available in COMSOL to use directly. Researchers have to prepare their model by themselves as you know !! So, in my understanding, if you want to implement the similar approach (Enthalpy-Porosity method or other approaches ) in COMSOL platform either by using phase field or Level set methods along with Navier-Stokes and heat transfer equations then some terms in original equations are required to be modified !! I also found some papers where such modification is done !! I am currently facing the problem to implement the stand Numerical approach to COMSOL platform for simulating the melting phenomena ! Anyway, you can also see the papers written by ``V. R. Voller`` ( perhaps, you know !!!) on Solidification process for numerical techniques. Hope you may find why the equations reported in papers are different from COMSOL documents !!
Good luck !
AH
Hi, Akter Hossain
Yes, the governing equations of phase field and level set are different from those in the literatures. I think the reason is that the phase field and level set method in Comsol are for tracking the multiphase flow moving boundary, not for the solidification or melting. You see, the governing equations of pf and ls in comsol, they both have the velocity terms. especially, the pf method, in comsol, the governing equation is Cahn-Hilliard equation, but in literatures, Allen-Cahn equation is used. To the ls method, in comsol, the velocity is the velocity of the fluid, but in literatures, the velocity is the velocity of the moving interface. These are my understanding.