Movie 2.

Trajectories of imaginary inertia-less tracers. Tracers (cyan dots) are introduced from the boundaries of the domain at the same concentration C₀, move with the measured flow field, and disappear from the simulation when they encounter the polyp or exit through the top. The quiver arrows represent point measurements of the flow field. For presentation reasons only 25% of the vectors measured are shown. The heatmap overlay represents the velocity magnitude |u| (see colorbar for scale). The video is sped up by 30%. Click the image to acess the video on YouTube.