Thank you for the tip. I have already defined velocity contours in Results and define Solution Animation in Calculation and also saved the data (animation seems to show in .cxa and data file in .dat.gz format). What I am unable to do it view the vortices (velocity magnitude) at different times. I can see the results in CFD Post and it has vortice formation but I am unable to see Velocity magnitude contour at different time or even time-step in CFD post.n