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Boundary conditions - top part of a VOF scheme |
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February 22, 2024, 19:41 |
Boundary conditions - top part of a VOF scheme
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Ralph N
Join Date: Feb 2024
Posts: 6
Rep Power: 2 |
Hi guys,
I am trying to simulate a droplet breaking up in a 2D VOF scheme. My setup is a droplet falling in the x-direction (with gravity in the x-direction) and an axis boundary condition at the bottom (for symmetry), a velocity inlet, and a pressure outlet. For the top part of my setup, I want to make it so that it doesn't have an effect on the scheme. I tried making it a pressure outlet, but I would then have a velocity inlet and a pressure outlet at the same cell in the top left corner, which messes with my convergence. Then, I tried making the top part a slip wall, but that made it so that my droplet doesn't deform. What could I change it to so that it remains open while not getting any convergence issues. For reference, I have attached a figure of my domain. Thanks! Screenshot 2024-02-23 003929.jpg |
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