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Rising velocity of a swarm of spherical bubbles in a power law non‐newtonian liquid
Author(s) -
Gummalam S.,
Chhabra R. P.
Publication year - 1987
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.5450650616
Subject(s) - swarm behaviour , shear thinning , non newtonian fluid , mechanics , newtonian fluid , power law , work (physics) , physics , classical mechanics , law , mathematics , mathematical optimization , rheology , thermodynamics , political science , statistics
Previous work on the rise of a swarm of bubbles in non‐Newtonian media has been reviewed. Variational principles have been combined with the Happel free surface cell model to obtain upper and lower bounds on the swarm velocities of bubbles rising slowly through power law liquids. The predictions presented herein encompass wide ranges of gas holdup and shear‐thinning behaviour.