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UDF for monitoring velocity difference in each cell??

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Old   January 21, 2016, 10:52
Default UDF for monitoring velocity difference in each cell??
Join Date: Jun 2011
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Hi all,
I have a question if it is possible to make own monitor-expression which calculates in each iteration the difference of velocities from the current iteration and previous iteration in a whole mesh?

If so, is UDF necessary? Can anybody provide sample UDF for that purpose?
Any help will be appreciated.
best regards
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