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Modelling of transient mass transfer in liquid and liquid‐solid pulsating systems: Applications and extension to heat transfer
Author(s) -
Maucci E.,
Martinuzzi R. J.,
Briens Cedric L.,
Wild Gabriel
Publication year - 2001
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.5450790305
Subject(s) - mass transfer , transient (computer programming) , mechanics , pulse (music) , mass transfer coefficient , flow (mathematics) , steady state (chemistry) , heat transfer , thermodynamics , materials science , chemistry , physics , optics , detector , computer science , operating system
The dynamic surface renewal model of Maucci et al. (2001) is applied to transient mass transfer problems and extended to transient heat transfer measurements in pulsating, two‐phase flows. The model is also used to simulate mass transfer for square‐wave liquid velocity pulses in a liquid‐solid column. Experiments and simulation show that, when flow reversal occurs, the average mass transfer for a pulsating flow can be significantly higher than for steady state flow at the same bulk flow rate. This increase depends mainly on the relative pulse magnitude. The influence of pulse frequency and symmetry is second‐order. Apparent differences between various published studies are resolved.