[Melvins]

I don't know why I can't insert the image here, because I am a new guy?
But my impeller seems to keep stationary in different timesteps in CFX-post , as well as contours.
I am using a rotating domain which contain the impeller.
Please help...TAT

[monkey1]

And you defined a rotation around the impeller axis that gives you enough movement during one (or several timesteps) to be able to see...meaning if you are looking at e.g. 1e-3 s timesteps and your impeller has moved during this period of time only 1° or less then it seems as if it is stationary although it is moving....

[Melvins]

Originally Posted by monkey1

And you defined a rotation around the impeller axis that gives you enough movement during one (or several timesteps) to be able to see...meaning if you are looking at e.g. 1e-3 s timesteps and your impeller has moved during this period of time only 1° or less then it seems as if it is stationary although it is moving....

Actually, I defined the rotating velocity as 2e-2 s/rev, and timestep was 2e-4, so it took 100 timesteps per rev, and I recorded the data every 10 timesteps....