Hi, I am working with a bioreactor and the idea is that a chamber with air, or any other gas will be filled with media, that is a liquid (I can use water to simulate this liquid media). I would like to know if I can use the Flow Simulation to simulate the chamber being filled, I have tried that several times but apparently the software always assumes that the chamber is already filled with water and shows me how the water will behave when that happens, which is helpful but is not what I was expecting.

I have searched for people with a similar question but I couldn't find anyone.

Thank you in advance.