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Bubble size and velocity measurement in gas—liquid systems: Application of fiber optic technique to pilot plant scale
Author(s) -
Saberi S.,
Shakourzadeh K.,
Bastoul D.,
Militzer J.
Publication year - 1995
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.5450730213
Subject(s) - bubble , calibration , wedge (geometry) , optics , materials science , gas bubble , optical fiber , fiber , mechanics , physics , composite material , quantum mechanics
A new fiber optic probe was developed for the detection and measurement of bubble sizes and velocities in a gas‐liquid column. The probe is made of a single 1 mm plastic fiber with a sharp wedge tip. The calibration was carried out on a laboratory scale unit using a cine‐photographic technique to verify the measurements. Bubble velocities were calculated using two identical parallel fibers and the cross‐correlation technique. With the velocities and the passage time determined, it was then possible to determine the bubble diameter. Bubble diameters were within 10% of the measurements obtained with the cine‐photographic technique. After calibration, measurements were carried out on a pilot scale unit.