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Bubble drag and mass transfer in non‐newtonian fluids: Creeping flow with power‐law fluids
Author(s) -
Hirose T.,
MooYoung M.
Publication year - 1969
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450470318
Subject(s) - drag , non newtonian fluid , bubble , mechanics , mass transfer , drag coefficient , newtonian fluid , rheology , power law fluid , power law , flow (mathematics) , stokes flow , parasitic drag , physics , classical mechanics , materials science , thermodynamics , mathematics , statistics
The drag and mass‐transfer characteristics of a gas bubble moving in power‐law non‐Newtonian fluids are examined analytically in terms of the rheological properties of the system. An approximate solution for the case of creeping flow around circulating bubbles shows that the mass‐transfer coefficient is enhanced for pseudoplastics and depressed for dilatants compared to the situation for Newtonian fluids. Some preliminary experimental results in support of the analysis are presented.