Flow Visualization in Dragonfly Flight

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Flowing seed point visualization is used to capture leading edge vortex formation, attachment and shedding as well as forewing-hindwing wake interaction in the simulated flow around a pair of digitally reconstructed dragonfly wings. Seed points are injected into the flow at chordwise cuts 75% from the wing roots and advected over time while streamlines are integrated in the instantaneous vector fields. The camera’s focal point is fixed to the forewing root while the camera moves to remain approximately parallel to the forewing’s leading edge.