dynamic mesh: cells get crowded....Help

noa · June 22, 2011, 08:45

I was using dynamic mesh in my 2D model and it worked well. However, when I change a bit my model and refine my mesh, I get negative volume cells. From some reason during moving, the cells get crowded at a specific place and gernerate negative volume.

Does someone have an idea

?????
I am stuck!!!!!

hero · June 25, 2011, 03:43

in per time step is the convergence well?you can check the mesh and the setting of dynamic mech.

noa · June 25, 2011, 15:27

Thank you for your respond.

I am sure there are parametrs that are not defined well. I used layering
remeshing ..and went through the tutorial

It starts from the first time step that the cells are getting very small just but just in one point. It looks like it the remeshing at that point doesn't work well from some reason...

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June 25, 2011, 03:43		#2
hero New Member jiang li Join Date: Jun 2011 Posts: 1 Rep Power: 0	in per time step is the convergence well?you can check the mesh and the setting of dynamic mech.

June 25, 2011, 15:27		#3
noa Member anonymous Join Date: Feb 2011 Posts: 50 Rep Power: 15	Thank you for your respond. I am sure there are parametrs that are not defined well. I used layering remeshing ..and went through the tutorial It starts from the first time step that the cells are getting very small just but just in one point. It looks like it the remeshing at that point doesn't work well from some reason...