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virginie_e March 5, 2009 09:01

Hello, I would have liked

I would have liked to ask what kind of boundary condition I should set on a wall where there is a triple point (limit between my fluid and air). I would like this triple point to move naturally during the simulation. I saw in another thread that the slip condition for motionU worked if the wall was flat. But, what if it is not flat?

Thank you in advance.


deepsterblue March 5, 2009 10:45

I think the slip BC takes poin
I think the slip BC takes point-normal information from each patch and uses that to zero-out the forces in that direction at the motion-solver level.

If this is indeed the case, then I guess the slip boundary should work even on a non-planar wall. But I would be a little concerned if mass-conservation is a priority in your simulation - moving points on a non-planar surface tends to develop minor errors in domain-volume over time.

There's only one way to find out - try it!

akidess November 8, 2011 12:52

Virginie, have you continued your work with interTrackFoam? If so, did you experience any problems with wall contact?

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