Effects of ‘‘Kalliroscope’’ flow visualization particles on rotating Couette–Taylor flow

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Abstract
Experimental results are presented which show that Taylor vortex flow in a vertically mounted rotating Couette system, visualized with a ‘‘Kalliroscope’’ suspension evolves to a spatially nonperiodic flow which is also nonperiodically time dependent. These effects are most noticeable in systems of large aspect ratio and depend on the concentration of the suspension. Experimental evidence is presented that suggests that these phenomena are caused by the evolution of a periodic variation of the Kalliroscope particle concentration along the cylinder axis and parallel to the gravitational field.