Breakup of drops and bubbles translating through cylindrical capillaries

A. Borhan, J. Pallinti

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

We examine the shape deformation and breakup of air bubbles and viscous drops moving through vertical cylindrical capillaries under the action of pressure and/or buoyancy forces. Experimental observations of fluid particle shape are reported over a wide range of particle sizes and capillary numbers in a variety of two-phase systems. Four different modes of breakup are identified, and the critical conditions for the onset of various modes are examined. It is found that buoyancy forces can have a stabilizing effect on the breakup mechanism observed by Olbricht and Kung [Phys. Fluids 4, 134, (1992)] for low viscosity-ratio drops, wherein a growing indentation at the trailing end of the drop develops into a penetrating jet of outer phase fluid.

Original languageEnglish (US)
Pages (from-to)2846-2855
Number of pages10
JournalPhysics of Fluids
Volume11
Issue number10
DOIs
StatePublished - Oct 1999

All Science Journal Classification (ASJC) codes

  • Computational Mechanics
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

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