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Old   June 28, 2009, 03:09
Default Dynamic Mesh
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I am trying dynamic meshing for first time.
Ive succeded in building a udf and now have debugged it to be compiled succesfully but after setting boundary condition, dynamic zones etc bit before the initialization whenever i try the display-zone motion to see if its working. it does not.
i am using define_grid_motion to ssimulate a periodic bump over a waat boundary. but its not working. I going crazzy . please can someone help??
my deadline is tuesday. its very very imp for me.
please help.

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Old   June 28, 2009, 19:24
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Instead of defining all boundaries in dynamic mesh >zones bar, just try to define the rigid bodies that will move.
Hope it works
Timeo hominem unius libri
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Old   June 28, 2009, 20:50
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My wall which is submerged in fluid is changing shape actually.
and so i define zones for the 1.wall, 2fluid, 3default interior. and rest which are stationary, I dont define anything for them in define-zones.
now when i try to look at mesh in mesh mootion, the boundary seems to have moved, therefore the udf seems to be wrking ok but the mesh over that does not move and hence some cells come inside the wall and error pops up for negative cell volume. i tried to lower the time step too much but with no success. also when i try to c the wall move in display-zone motion, i dont see anything.
any suggestion
BTW thanks for replying
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