Thank you Rob. I am currently working to get access to the customer portal.

But could you please confirm whether it is possible or not to replace and customize the default definition of the liquid fraction beta term in the solidification and melting model? I just want to know if it is possible or not.

I was able to get reasonable results by manipulating the fluid viscosity using UDFs, and there is potential to further improve results by coding more variables into the UDFs as desired. I am just asking because I'd still prefer to customize the liquid fraction term instead (or atleast see how that would compare with this method). But if you can confirm this, then I could just focus on one method and be confident that it is the best possible way with current capabilities/permissions.

Please advise. Thank you very much for your continued guidance and patience in this matter.