Asymmetry-induced particle drift in a rotational flow

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

doi:10.1063/1.1978921

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Asymmetry-induced particle drift in a rotational flow

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Luther, S.
Research Group Biomedical Physics, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Citation

Bluemink, J. J., van Nierop, E. A., Luther, S., Deen, N. G., Magnaudet, J., Prosperetti, A., et al. (2005). Asymmetry-induced particle drift in a rotational flow. Physics of Fluids, 17, 072106-1-072106-5. doi:10.1063/1.1978921.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0029-1573-5

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.