Eh, I could shortly say: yes.
In particular, if you say it was proven with real dynamic simulation in Hysys. The solver in the depressuring utility and the dynamic solver are the same.
Francesco, Morten,
The new utility has TWO valves, one for the liquid and ond for the vapour. The liquid valve is at the bottom of the vessel. If you specify "no flow" for the liquid valve, that just means that the bottom valve stays closed.
You can get a correct result, even for the...
Francesco,
You should be able to run this type of problem in HYSYS 3.1. Take the "Dynamics Depressuring". You do not need any additional license for this. I just tried it with an example inspired on your problem description.
As can be expected, the pressure drops very quickly. You...
Just to let you know that you do not need an external program to convert ProII files to Hysys. Hysys has a built-in ProII case reader. Kind of late after the question, but it might still be useful.
Wim