I´m running a transient simulation with dynamic mesh. The position at the beginning is as follow. There is inflation which moves according to the mouvement of a piston. The cell size is 2E-5 m and the parameter are the following. Region Face is enabled because there are moving vertical boundaries in the domain too. I have use a time step size of 7E-6 s.
After several time steps, one cell with negative volume is detected:
As Cell Heigt for the moving boundary "piston", I have set 1,5E-5 m. Should I just set the value of the first layer height and not the height of the inflation ? I have yet chang the Spring Constant Factor between 0 and 1, without any changes.