VISUALIZATION OF SEPARATED VORTICES USING LASER INDUCED FLUORESCENCE.

Flow visualization is one of the oldest sub-disciplines of experimental physics. The familiar examples of the work of Reynolds and Prandtl demonstrate that visualizing a flow may often be a key to understanding it. Nontheless, flow visualization depends heavily on the art of technique for its effectiveness, and centuries of technique development have still not provided appropriate means for visualizing some flows. Iodine molecules are seeded into a supersonic air tunnel and used as a tracer for spatially resolved flow visualization of separating vortices. The velocity and density field is visualised by interogating the flow with an argon laser.

Overview