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Modelling free water surface
Posted 2014年3月24日 GMT-4 04:09 0 Replies
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First, excuse me for my english, I try to do my best...
I'd want to create a model which could simulate the free surface of a liquid (water for example) in a test tube and the analysis would be focused on the shape of this surface. I could do this using Comsol 3.5a, but I recently upgraded to 4.1 version and I don't get how to write my boundary conditions.
I use single phase fluid flow, and moving mesh ALE method in a 2D analysis. I let a free surface and the 3 others are walls. On the the free surface I let the mesh being deformed (vn=u*nx+v*ny) and I apply the surface Tension force (-nu_surf*(uTx_test+vTy_test)). But my problem is I dont jknow where to write that condition in 4.1... Same thing for the angle of contact where I have an extrusion variable (used as the normal to the contact) and I write a weak expression for the angle...
If anybody can help me that would be great :)
Thanks!
Nicolas
Hello Nicolas Lhenry
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