Hey people, I have a pressure vessel pressurized to say 20MPa at 33C, of which i'm working with a gas (scCO2 to be exact) which will then be released into the atmosphere (standard pressure and temperature) through a release valve; i'm wondering how long it will take for the pressure to reach equilibrium? I'm assuming it'll be some sort of exponential decrease and hoping to model it to figure out how long it takes to reach 70/80/90% of pressure drop. I'm working on getting the Cv for the release valve. My main issue is wondering how the conditions change because i'm using a gas instead of a liquid? For example, the valve says it can reach a maximum flow rate of 24ml/min. This makes sense when working with a liquid at standard pressure, but how does that change if i'm working with a gas? More precisely how does that change if the pressure differential between vessel and atmosphere is 2x, 5x, 10x, 20x?