Vorticity?
Hi, I'd like to create iso surfaces of vorticity. Can someone tell me how to do that? Moreover I'd like to export data to compute vorticity magnitude, is it possible? Thanks for the answer!

Curl of velocity is a mathematical definition of vorticity. You can use this variable for vorticity. I don't understand your second question.
OJ 
Thanks for the answer. I'd like to know if I can obtain a matrix with the values of vorticity magnitude, velocity, pressure, etc... for a plane or a volume

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