The image shows the instantaneous cross-section of an impulsively
started jet in cross-flow 1.5 seconds after the initiation of the flow.
The imaging plane 1.5 jet diameter downstream of the jet exit in a
plane orthogonal to the cross-flow.
The image was collected using Planar Laser Induced Fluorescence of
Rhodamine 6G dye.
The Jet to Cross-Flow Velocity ratio is 4.2 and the Jet Reynolds Number
Notice the numerous vortical structures and the symmetry.