Coalescence of drops and bubbles rising through a non-newtonian fluid in a tube

Eisa Al-Matroushi, Ali Borhan

Research output: Chapter in Book/Report/Conference proceedingChapter

3 Scopus citations

Abstract

We conducted an experimental study of the interaction and coalescence of two drops (of the same fluid) or bubbles translating under the action of buoyancy in a cylindrical tube. The close approach of two Newtonian fluid particles of different size in a non-Newtonian continuous phase was examined using image analysis, and measurements of the coalescence time are reported for various particle size ratios, Bond numbers, and particle-to-suspending-fluid viscosity ratios. The flow disturbance behind the leading bubble and the viscoelastic nature of the continuous phase seemed to retard bubble coalescence. The time scale for coalescence of liquid drops in highly elastic continuous phase was influenced by the relative motion of the drops and their coalescence behavior.

Original languageEnglish (US)
Title of host publicationInterdisciplinary Transport Phenomena Fluid, Thermal, Biological, Materials, and Space Sciences
PublisherBlackwell Publishing Inc.
Pages225-233
Number of pages9
ISBN (Print)9781573317122
DOIs
StatePublished - Jan 1 2009

Publication series

NameAnnals of the New York Academy of Sciences
Volume1161
ISSN (Print)0077-8923
ISSN (Electronic)1749-6632

All Science Journal Classification (ASJC) codes

  • Neuroscience(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • History and Philosophy of Science

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