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AMI and water surface instabilities

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Old   January 21, 2019, 21:53
Unhappy AMI and water surface instabilities
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Justine
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Hi Again,

I'm creating a new post about the same issue as my last one, but this time I've narrowed it down a bit and am including some new images.

I have a circular (cylindrical) arbitrary mesh interface (AMI) in a mesh that is intersected by a water surface. The solutions start out with some kind of instability that creates very high velocities near the intersection of the AMI and the water surface. I have tried refining the mesh in this area, but the issue persists.





I also see some velocity magnitude around the entire circular AMI region when it should be still:



The results are non-physical and extreme water disturbance, such that I cannot work this the model as it is and greatly need assistance in fixing this issue.
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ami patches, multiphase flow, water surface level

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