Bubble distribution in shear of flow of highly viscous liquids

Koichi Terasaka, Sayako Murata, Kaori Tsutsumino

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The size of bubbles distributed from a horizontal nozzle into shear field generated by a Couette flow between concentric cylinders was investigated using dual high-speed video cameras as parameters, i.e., shear rate, gas flow rate, nozzle diameter, gas chamber volume and liquid viscosity. When the bubble was lifted up by buoyancy and stretched horizontally by shear flow, the cut of the bubble neck was caused by the greater deformation. When the inclined bubble angle by shear flow was greater than the elevation angle by buoyancy, the bubble's detachment was governed not by viscosity but by shear flow. To estimate the bubble size, a correlation equation was proposed in this study.

Original languageEnglish
Pages (from-to)470-475
Number of pages6
JournalCanadian Journal of Chemical Engineering
Volume81
Issue number3-4
Publication statusPublished - 2003 Jun 1

Keywords

  • Bubble
  • Bubble formation
  • Gas distribution
  • Highly viscous liquid
  • Shear flow

ASJC Scopus subject areas

  • Chemical Engineering(all)

Fingerprint Dive into the research topics of 'Bubble distribution in shear of flow of highly viscous liquids'. Together they form a unique fingerprint.

  • Cite this