I kind of new with ANSYS fluent and need some help. I'm trying to simulate solidification process of phase change material (pcm) with 2D model. the pcm fills the free space in the comb-liked heat transfer structures and at the top and bottom of the comb, there are heat transfer fluids that have temperature lower than the pcm. for the simulation I just draw a thin wall(blue) with thickness of 1,5 mm where at one side, the comb make contact with the wall and at the other side, heat transfer fluid.
after running the simulation for 4h, there is no temperature change to the heat structure. anyone knows why this happened?