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Ansys Learning Forum › Forums › Discuss Simulation › Fluids › How to get shear rate macro in UDF? › Reply To: How to get shear rate macro in UDF?

July 23, 2021 at 3:09 pm
montenegro
Subscriber
Hi.

Yes, I know I can set the viscosity equation via the 'custom field functions' option, but the problem persists. I am still doubtful regarding which parameter should I use, the "Strain rate" (C_STRAIN_RATE_MAG(c, t)) or the "dX-velocity/dy" (C_DUDY(c,t)) and if I use the latter one, my solution doesn't converge.

Thank you.
Best regards.