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Dynamic mesh for tetrahydral elements

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Old   June 13, 2011, 11:16
Default Dynamic mesh for tetrahydral elements
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Hi

I am trying to simulate a case of withdrawing reservoir fluid through a plunger. I am trying to apply moving mesh at the plunger head that is moving away at constant velocity (UDF). Tetahydral mesh is utilized. I declard the outlet bounday as wall and used dynamic mesh there. The method I tried is 'Layering' as well as 'remeshing'. But, my elements at the layer attached to the moving boundary get elnogated in transient analysis. Thus aspect ratio goes on increasing too high that the solution diverges at the moving bounday. What options/sizing function shall I apply. Any tutorial on this topic. urgent hepl is required.
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