[mosef]

Hey,

I created a 2D-circle which is filled with a material (paraffin). I want to simulate melting/solidification of the material. When I simulate the melting of the paraffin, it should be sink down to the ground, because the density of the solid paraffin is higher then the density of the molten paraffin.
I can simulate this by setting the 'Flow Stop Relative Solid Fraction' to >1. This is not the problem. But I am not satisfied with the solution...

My question now is:
Is it instead possible to set the 'Flow Stop Relative Solid Fraction' to < 1 and to create a field function, which defines a velocity for the paraffin in the y-direction (downwards)?
I have no experience with defining field functions and I have not found a good tutorial, is there somewhere a good one? Or can you help me telling me if this is possible?

Thanks a lot