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Formation of drops at narrow slots in a centrifugal liquid–liquid contactor
Author(s) -
Wadley Robert,
Lee Jonathan G.M.,
Wraith Albert E.
Publication year - 2000
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.5450780504
Subject(s) - sauter mean diameter , drop (telecommunication) , mechanics , surface tension , contactor , breakup , capillary action , centrifugal force , spinning drop method , weber number , optics , materials science , chemistry , physics , thermodynamics , reynolds number , flow (mathematics) , composite material , turbulence , nozzle , engineering , mechanical engineering , power (physics)
In experiments on the dispersion of organic phases into aqueous phases, drops were generated continuously at narrow slots of width 12 μm ≤ w ≤ 125 μm mounted peripherally and normal to the radius in a ‘Hi‐Gee’ centrifugal contactor. The drops formed at an array of sources attributed to the Rayleigh‐Taylor instability distributed an average distanceapart where σ is the interfacial tension of the phases, Δρ their density difference and g the applied centrifugal acceleration. Measured Sauter mean drop diameters were in the range 0.48 to 1.00 mm. The average drop size, d , was given bywhere d̄* = 0.1538 ± 0.0016 m 1/3 is a measured capillary factor. Drop size was marginally affected by inertial forces at the highest flow rates.