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Boundary conditions that allows air to escape

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Old   October 17, 2018, 07:39
Default Boundary conditions that allows air to escape
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Mark Herskind
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Hi...

I'm looking for a way to simulation a multiphase-flow that includes a deaeration system... It's basically a valve, which only allows air to escape..

So the multiphase flow enters through the inlet, the geometry will seperate some of the air (low velocity zones+gravity), that'll bubble towards the valve.. At the valve, only air can escape.. The rest of the flow, water and maybe some air, will escape through the outlet...

I'm running a transient VOF simulation using interfoam...

Any suggestion on a boundary condition to use for this valve?


/Mark
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