I try to get the graph of pulsing behavior of my rotating propeller. what I have done is create a point surface within the propeller and monitor the changing of the velocity with time steps. I have run my simulation based on the following detail,

Time step size (s): 0.001; Number of time steps: 250

The monitoring just show me a straight line correspond to time. Am I do the wrong thing? If you have such experiences, please share with me. Thanks in advance.

Maybe it it due to the fact that your time step is so low that you can't see a variation with time.

have you tried with the report type vertex average? or verified it with mass flow rate?

i hope this helps

David