Unusual Particle Drift in a Rotating Flow.

ORAL

Abstract

An unexpected, asymmetry-induced steady particle drift in viscous liquids filling a horizontal cylinder rotating around its axis was first reported by Bluemink \textit{et al}. [Physics of Fluids \textbf{17}, 2005]. We have explored the motion further, particularly its dependence on the aspect ratio (L/r) of the cylinder. Experiments at smaller aspect ratio show that the drift is not steady, rather it is formed of repeated leaps, which are associated with the changing axial tilt of the particle or air bubble. We investigate the forces acting on the particle and the possible sources of this particular motion.

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Authors

  • Antonino Carnevali

    MSU Space Science Center

  • Rebecca Scott

    UCSB, LBNL, NCSU, University of North Carolina at Chapel Hill, Wright State University, Department of Physics, The University of Memphis, TN 38152, North Carolina State University, Department of Chemical and Biomolecular Engineering, Raleigh, NC, Clemson University, Fisk University, University of North Dakota (Grand Forks), Southern Illinois University, The University of Tennessee Space Institute, SC Governor's School for Science and Mathematics, Francis Marion University, University of North Alabama, Lousiana State University, Department of Physics, Dhaka University, Dhaka, Bangladesh, Head of Government Relations, American Physical Society, Vanderbilt University, Mississippi State University, Emory University, College of William and Mary, University of Tennessee Space Institute, Morehead State University