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-   -   Vacuum chamber and choked flow simulation (https://www.cfd-online.com/Forums/fluent/123601-vacuum-chamber-choked-flow-simulation.html)

matteo89 September 17, 2013 05:26

Vacuum chamber and choked flow simulation
 
Hello, I have a problem. I want to simulate an air flow from a 10^5 Pa zone to a 100 Pa zone. How can I activate choked flow? I think Fluent doesn't see it (in the throat there are subsonic conditions). Also I don't understand very well which parameters should be inserted in "operating pressure", "gauge pressure" in solution initialization and "supersonic\initial gauge pressure" (I used a mass flow inlet with the choked mass flow rate value). Can anyone help me? :confused:
Thank you!


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