Particle migration rates in a Couette apparatus

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

研究成果: Conference article同行評審

2 引文 斯高帕斯(Scopus)

摘要

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.

原文English
頁(從 - 到)241-251
頁數11
期刊Advances in Fluid Mechanics
37
出版狀態Published - 2004 八月 5
事件Second International Conference on Computational Methods in Multiphase Flow, MULTIPHASE FLOW II - Santa Fe, NM, United States
持續時間: 2003 十一月 32003 十一月 5

All Science Journal Classification (ASJC) codes

  • 凝聚態物理學
  • 能源工程與電力技術
  • 機械工業

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