Hi again, sorry for the late response. I have been trying to slowly piece my way through all the possible issues and learn more about fluent.
I think I have figured out why I am getting the error, but I am not sure how to solve it. I took what you said about moving across one cell length and I shrunk the cells near the box small enough that when I start the simulation many of them are already liquid when I leave dynamic meshing off, so it runs just fine then.
When I go to turn on dynamic meshing though, the box for some reason jumps high or low after just a couple of time steps as seen in the preview mesh picture. This causes certain cells to fail, which makes sense. I am just not sure what part of the dynamic mesh settings is causing the box to jump. I want the box to slowly move down as the liquid fraction of the cells below it changes but it seems to just ignore that. I left pictures of my dynamic mesh setup that I think should work. The “box_inside” is the wall of the center box while the “box_itself” is the ice I expect to melt. Is there something I am missing here? If you need another picture of settings that I am not showing please let me know and I’ll happily show it.
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