Hey, I was working on a CO2 car project in which I need to know the pressure outwards force of a 8g CO2 cartridge (link: https://www.pitsco.com/CO2-Cartridges) as a function of time. I tried doing the physics by hand using ideal gas law and graham’s law, but I don’t have another gas as comparison. I also tried using mass flow rate, but I don’t know how to calculate volumetric flow rate or mean velocity.

I have a rudimentary CAD model of the cartridge as well as all the dimensions and the amount of CO2 inside, but I don’t know how to model pressure of a gas escaping from a container on Simscale.

Could someone show me how to create a simulation for this problem?

Thanks.