2D-simulations were performed and compared to the experimental results. The experiment was very successful insofar as the plane free liquid surface remained stable during the experiment. Under microgravity one vortex with the back-flow penetrating into the whole section volume wasobserved. A discontinuity in the surface-flow 2 mm below the surface was found both in the experiment and in numerical simulations. The experimental results and the two-dimensional calculations compare rather well.
Discrepancies are most probably due to the three-dimensional character of the experiment.
A transition to time-dependent flow was observed under microgravity as well as under normal gravity.