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Local bubble behavior in three‐phase fluidized beds
Author(s) -
Chen Z.,
Zheng C.,
Feng Y.,
Hofmann H.
Publication year - 1998
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.5450760220
Subject(s) - bubble , mechanics , fluidization , materials science , sauter mean diameter , local bubble , flow (mathematics) , phase (matter) , fluidized bed , thermodynamics , physics , quantum mechanics , interstellar medium , galaxy , nozzle
Bubble behavior, including bubble Sauter diameter, bubble rise velocity, bubble frequency and local gas holdup in different radial and axial positions, was measured using a dual electro‐conductivity probe in air‐water‐glass beads fluidization systems. It has been found that the bubble characteristics differ significantly in various flow regimes, depending on the operating conditions; the radial distribution of bubble parameters also changes from one flow regime to another. Thus, it is necessary to employ local bubble behavior in the modeling of three‐phase fluidized beds.