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Low-Reynolds-number swimming in viscous two-phase fluids

Jian Du1, James P. Keener1,2, Robert D. Guy3, and Aaron L. Fogelson1,2

  • 1Department of Mathematics, University of Utah, Salt Lake City, Utah 84112, USA
  • 2Department of Bioengineering, University of Utah, Salt Lake City, Utah 84112, USA
  • 3Department of Mathematics, University of California Davis, Davis, California 95616, USA

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Phys. Rev. E 85, 036304 – Published 15 March, 2012

DOI: https://doi.org/10.1103/PhysRevE.85.036304

Abstract

The fluid media surrounding many microorganisms are often mixtures of multiple materials with very different physical properties. The composition and rheology of the mixture may strongly affect the related locomotive behaviors. We study the classical Taylor's swimming sheet problem within a two-fluid model, which consists of two intermixed viscous fluids with different viscosities, with both numerical experiments and analysis. Our results indicate that both the swimming speed and efficiency may be decreased substantially relative to those for a single-phase fluid.

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Outline

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Phys. Rev. E 85, 036304– Published 15 March, 2012
  • Received 27 September 2011

©2012 American Physical Society

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