[gus_massa]

It looks like a usual convergence movement.

In the rotating reference frame, I think the centrifugal force will cause no problem in an uncompressible fluid, just a weird pressure profile. It will affect the particles in suspension and bubbles, but I don't expect too much effect in the liquid.

I think the Coriolis force has a bigger effect. I expect more curls with the axis in the vertical direction (that is the usual axis of centrifugues), than in the other directions. Also, most of them rotating in the correct direction (like hurricanes on Earth).

Is there info about how is the camera mounted on the centrifugue? I expect it to be on top, because a spinning camera looks too difficult. I'd expected more vibrations. Centrifugues are noisy and vibrate a lot. Is the video stabilized?

I'm not sure about the effect of the vibrations. Probably it's more difficult to have a laminar flow.