Learning Forum

[rahmanmahfuz11]

"Velocity" of fluent is named "velocity in Stn frame" in cfd post. I need to calculate vorticity which is dv/dx - du/dy or du/dy - dv/dx depending on clockwise or anti-clockwise rotation. Now the velocity derivatives available in the variables in cfd post are Velocity v.Gradient X, Velocity v.Gradient Y, Velocity u.Gradient Y, Velocity v.Gradient X etc. My understanding is they are "velocity in cfd post" derivative not "velocity in fluent" or "velocity in Stn frame in cfd post" derivative. I couldn't the derivatives of actual velocity i.e. velocity in Stn frame which my vorticity equation requires. How can I solve this issue? For comparison, I am attaching vorticity contour developed using both cfd post and tecplot.

[RK]

Hello,
I am glad you you got this sorted and thank you for posting the solution as well.

[DrAmine]

thanks for posting the solution.

[Dishant Sharma]

normalised z vorticity contour in cfd post. could anyone tell me the steps as im not getting the required contour.

[ehsan.sadeghi]

would you please say which color map have you used?