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dynamic mesh + boundary layer cells

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Old   November 1, 2007, 16:27
Default dynamic mesh + boundary layer cells
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I'm using a simple udf for defining a prescribed motion for a rigid body with a boundary face zone moving with it. I want them move together, so i assigned the udf (compiled) to both. The problem is that i receive a bad message from fluent:

FLUENT received fatal signal...

If i assign the cg motion to the body only, it works, but the mesh not to good that case...

Can anybody guess my mistake???

many thanks
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