Our flow visualization approach is shown for 500 timesteps. 
This attachment contains 4 movies extending figure 2 from page 4 (timestep 450).

film1.mpg : unfiltered on a distance view
film2.mpg : filtered with a threshold of 0.185 on a distance view
film3.mpg : unfiltered on a closer view
film4.mpg : filtered with a threshold of 0.185 on a closer view