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Polymer drag reduction in Taylor vortices

Abstract

THE Toms effect1, whereby the addition of small quantities of polymer can typically produce 50% reduction in drag, occurs in turbulent flow systems. We report preliminary observations of a similar drag reduction behaviour observed in a Couette apparatus when toroidal Taylor vortices2 are generated by rotating the inner of two concentric cylinders at sufficient speed; in this case the flow field is well understood and does not vary with time.

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KELLER, A., KISS, G. & MACKLEY, M. Polymer drag reduction in Taylor vortices. Nature 257, 304–305 (1975). https://doi.org/10.1038/257304a0

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