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boundary condition for two phase flow

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Old   June 8, 2020, 03:59
Default boundary condition for two phase flow
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Hello everyone,

I am trying to a 2D simulation as the image described, gravity was considered, obviously the pressure outlet boundary did not work well for this problem.

Is there any way to define a Neumann boundary condition at the outlet, like ∂p/∂x=0, ∂v/∂x=0, or other way to simulate this correctly.
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File Type: png air and water flow.png (50.8 KB, 18 views)
File Type: png pressure.png (15.2 KB, 16 views)

Last edited by Panda School; June 8, 2020 at 06:04.
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Old   July 6, 2020, 23:28
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the easy way to do it well is to use the vof flat wave method in star and then use the special pressure outlet hydrodynamic pressure field that is created
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boundary condition, two phase flow

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