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Boundary Conditions in a gas stirred tank.

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Old   January 20, 2016, 15:40
Default Boundary Conditions in a gas stirred tank.
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Hi everyone,
I am a beginner using Fluent. I am trying to simulate a gas stirred tank using Eulerian multiphase model. The case is about a tank full of water and the tank had a gas inlet in the center of the bottom of the tank. The Modelo is 2D. I am using the pressure-based solver. The tank is open to atmosphere, allowing the escape of injected gas. How can I set the atmospheric pressure (101325 Pa) in the top of the tank? What operating pressure condition should I establish?
The gas inlet is a velocity-inlet type of boundary and the value is 0.61 m/s. However, the condition needs a initial pressure gauge, What is the value that I have to set?

I hope you can help me and thank you for all your comments.
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Old   January 22, 2016, 02:07
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if it is open to the atmosphere just leave them as 0. both for the inlet and the outlet. (i think)
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