A von Karman vortex street forms in the wake of a cylinder in shallow channel flow, visualized with a rheoscopic fluid (Pearl Swirl).

A von Karman vortex street forms in the wake of a cylinder in shallow channel flow, visualized with a rheoscopic fluid (Pearl Swirl).

By Jason Brownstein for Spring 2014 Team Third.
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Rheoscopic fluid (Pearl Swirl) shows turbulent boundary layers in shallow channel flow.
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