Particle migration rates in a Couette apparatus

S. C. Hsiao, D. Christensen, M. S. Ingber, L. A. Mondy, S. A. Altobelli

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

Bulk migration of particles towards regions of lower shear occurs in suspensions of neutrally buoyant spheres in Newtonian fluids undergoing creeping flow in the annular region between two rotating, coaxial cylinders (a wide-gap Couette). For a monomodal suspension of spheres in a viscous fluid, dimensional analysis indicates that the rate of migration at a given concentration should scale with the square of the sphere radius. However, a previous experimental study [12] showed that the rate of migration of spherical particles at 50% volume concentration actually scaled with the sphere radius to approximately the 2.9 power. In the current study, a series of experiments is performed to extend the previous study to two new concentrations, namely, 35% and 42.5%. The new study indicates that the power scaling decreases with concentration.

Original languageEnglish
Pages (from-to)241-251
Number of pages11
JournalAdvances in Fluid Mechanics
Volume37
Publication statusPublished - 2004 Aug 5
EventSecond International Conference on Computational Methods in Multiphase Flow, MULTIPHASE FLOW II - Santa Fe, NM, United States
Duration: 2003 Nov 32003 Nov 5

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Mechanical Engineering

Cite this

Hsiao, S. C., Christensen, D., Ingber, M. S., Mondy, L. A., & Altobelli, S. A. (2004). Particle migration rates in a Couette apparatus. Advances in Fluid Mechanics, 37, 241-251.