Open Atmosphere Boundary Condition -- CFD Online Discussion Forums

January 28, 2018, 21:03	Open Atmosphere Boundary Condition	#1
spo New Member Join Date: Jan 2018 Posts: 1 Rep Power: 0	Hello all What is the proper way to create an open atmospheric boundary condition? I have three phases. I have a tank where I've patched a water mixture on the bottom, air on top, and third phase unpatched. I have energy enabled and the only boundary conditions enabled are walls everywhere and an outlet with 0 gauge pressure on top. I'm running the most barebones simulation and I can't seem to get my water to stay still. It begins to flow into the tank from my top outlet. I've tried all the backflow combinations. Does anyone know how to resolve this?

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