Asymmetry-induced particle drift in a rotating flow

J.J. Bluemink, E.A. van Nierop, S. Luther, N.G. Deen, J. Magnaudet, A. Prosperetti, D. Lohse

Research output: Contribution to journalArticleAcademicpeer-review

9 Citations (Scopus)

Abstract

We report on an intriguing phenomenon taking place in a liquid rotating around a fixed horizontal axis. Under suitable conditions, bubbles and particles are observed to drift along the axis of rotation maintaining a constant distance from it and a constant angle of elevation above the horizontal. Absence of fore-aft symmetry of the bubble or particle shape is a prerequisite for this phenomenon. For bubbles, this requires a volume sufficiently large for surface-tension effects to be small and large deformations to be possible. Particle image velocimetry and flow visualization suggest that the wake does not play a role. The dependence on bubble radius, particle shape, liquid viscosity, and speed of rotation is investigated.
Original languageEnglish
Article number072106
Number of pages5
JournalPhysics of fluids
Volume17
Issue number7
DOIs
Publication statusPublished - 2005

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