[anybody help me]

Hi,
I'm just starting to study Dynamic Mesh.




I want to implement a dynamic mesh where the pink faces rotate in the direction of the red arrow and the light blue faces disappear.

I've tried using profile to get the pink side to move in the direction of the red arrow, but the nodes on the light blue side are remeshing and don't merge or disappear, the cells just shrink in size, and the shape is broken.

I'm wondering what options I should give to the light blue side in this situation.

* I am currently using smoothing and remeshing, and have tried spring and diffusion among the smoothing schemes.

* Do I need to compile the UDF separately for the light blue side?
If I should use UDF, which macro should I use?

I've been struggling with this for a month now.
Please help ,,