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Old   August 2, 2013, 09:11
Lightbulb Tank depressurization
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Dear CFD community,

I am currently working on the depressurization of a tank whose volume is 1 cubic meter. The tank initially contains pure nitrogen at 40 bars. At t=0, the tank starts depressurizing through a pipe filled with water at atmospheric pressure. The goal of my study is to see how fast we can push the water away from the pipe.
The problem i am encountering is that i do not manage to specify an initial pressure inside my tank. I ve been trying to use the boundary conditions, but they can only be used on surfaces, not volumes.
Can anyone tell me how to set up initial condition for all the volume contained inside my tank please ?

Best regards
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boundary conditions, depressurization, tank

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