Reply To: microgravity fluid flow transfer

[Rob]

You need to decide if gravity is off, or a small value. What does the gas do in your model? Ie sketch out the full system and add all boundary information: that's your plan for the modelling work. 

Re the moving mesh, yes, if you want both gas volumes you still need moving mesh but also then need to account for gas expansion. Set up is not too disimilar but the physics will be harder to converge.