OK. I have studied this section.

This model:

I only have inlet and wall

inlet 8 MPa.


I turned energy ON.

I turned on the floating operation pressure 101325 Pa.

I included viscous heating in the turbulence models.

I used transient analysis and got the following results:

Can I say that the cylinder was filled with water and the pressure equalized as at the inlet in 0.015 seconds?