The simulation that I am trying to do is as follows.  I know that SW does not have dynamic meshing, so I am wondering if this might be an alternative.

I have a leg that is underwater (External Flow).  The leg moves back and forth through the water about a pivot point that is attached to a body.

How could I model this in Flow Simulation?  Could I specify a proper inlet velocity that is a function and changes direction and velocity based on where the part is supposed to be?

Is this idea even possible?  I am relatively new to SW flow simulation.

Thank you.