Hello
I can't model my problem as an attachment.
I have an empty box at t0 in air at 20°C and I'm trying to get CO2 out of a nozzle at -70°C. At the same time the bottom of the box heats up with a temperature that I impose.
Please, how can I set up my problem (the concentration of the two fluids, external or internal problem, why does it only have the inside of the nozzle which is at -70°C, limit condition of the CO2 evacuation hole)?
Thanks in advance!
boite.png