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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?

montenegro
Subscriber
Hello.

I'll upload the pictures. So, if I plot the contour for the strain rate it it is noticeable that in the center of the channel the value is very low, circa 0.26 1/s, but not zero.
This can be confirmed by plotting the same contour over a horizontal (xx) line I drew exactly in the middle of the channel.

I then plotted the contour for the dx-velocity/dy over this same centerline and you can see it is exactly zero, as the shear rate is supposed to be.
And I will send you the contour of the dx-velocity/dy over the channel as a confirmation that it is being calculated.

Thank you.
Best regards.