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Radial mixing and residence times in the liquid phase in gas‐liquid annular flow in vertical tubes
Author(s) -
Jagota A. K.,
Scott D. S.,
Rhodes E.
Publication year - 1972
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.5450500210
Subject(s) - entrainment (biomusicology) , mechanics , tracer , liquid flow , materials science , flow (mathematics) , dispersion (optics) , mixing (physics) , two phase flow , thermodynamics , optics , physics , quantum mechanics , nuclear physics , rhythm , acoustics
Theory for calculating the mean velocities of the drops and of the film in gas‐liquid cocurrent annular flow by use of tracer pulse techniques has been developed. It is shown that the interaction between the film and the drops affects the mean residence times in each, and is much greater in its effect than is axial dispersion in the film or in the core. The theory also describes a relatively simple means of determining the mean amounts of droplet entrainment and liquid interchange between droplets and film from measurements made with continuous tracer injection. Knowledge of the entrainment and the mean velocities of film and drops is essential in determining the extent of interaction between the liquid film and the entrained liquid flow.