Analysis—Rossby Number and Angular Momentum Conservation
The particle trajectories for the f = 0.500 rad s-1 and f = 1 rad s-1 are plotted in Fig. 2.
The
generally axisymmetric and rotational nature of the flow is clearly seen, with the particles
revolving about the drain hole much more rapidly than they move inwards. Because the
direction of fluid flow is primarily in the azimuthal direction with slowly-varying speed, the flow