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)


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
Issue number7
Publication statusPublished - 2005


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