Tangential and radial components of velocity

Thank you for the explanation.

I would have one more question if possible. Now that I got the tangential and radial velocities I have to time average them.

So, I used the following steps:

  • From Filter->Temporal->Extract Time Steps, I selected the wanted time (in my case, there is a swirl in a pipe so I extracted the time steps according to a rotation of the swirl);

  • I applied to the previous filter a new filter Temporal->Temporal Statistics and computed the average values.
    Is there another way to time-average the values? I have some reference velocities and the results are quite different as you can see attached.
    Regards,
    Robert