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:
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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);
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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
