UDF for Q-criterion to see structures -- CFD Online Discussion Forums

September 30, 2004, 07:14	UDF for Q-criterion to see structures	#1
mystic_cfd Guest Posts: n/a	Hi there I would like to identify and visualize structures in my simulation. One of the methods is to use Hunt's Q-criterion [Q = 0.5*(Rij.Rij - Sij.Sij)]. If anybody has a UDF or other recipe to calculate this in Fluent, I would really appreciate the help. regards m-c

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