Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.ces.2008.02.014
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dc.titleMass transfer across the falling film: Simulations and experiments
dc.contributor.authorXu, Z.F.
dc.contributor.authorKhoo, B.C.
dc.contributor.authorWijeysundera, N.E.
dc.date.accessioned2014-06-17T06:26:03Z
dc.date.available2014-06-17T06:26:03Z
dc.date.issued2008-05
dc.identifier.citationXu, Z.F., Khoo, B.C., Wijeysundera, N.E. (2008-05). Mass transfer across the falling film: Simulations and experiments. Chemical Engineering Science 63 (9) : 2559-2575. ScholarBank@NUS Repository. https://doi.org/10.1016/j.ces.2008.02.014
dc.identifier.issn00092509
dc.identifier.urihttp://scholarbank.nus.edu.sg/handle/10635/60678
dc.description.abstractMass transfer across the thin falling film gas-liquid interface is a very important process as in chemical engineering and other fields, and yet there is still a lack of general predictability of the transfer quantity based on basic hydrodynamic parameters and independent of the geometrical setup. In this work, a numerical simulation is carried out for a vertical falling film arrangement. The wave dynamics and the associated mass transfer phenomena are discussed and compared with previous experimental empirical relationships. Based on the validity of the simulated results for wave parameters, numerical experiments for mass transfer were carried out with the aim of comparing to the empirical relation based on a single hydrodynamic parameter β (the gradient of the vertical fluctuating velocity at the interface) established previously by Law and Khoo [2002. Transport across a turbulent gas-liquid interface. A.I.Ch.E. Journal 48(9), 1856-1868.] and Xu et al. [2006. Mass transfer across the turbulence gas-water interface. A.I.Ch.E. Journal 52, 3363-3374] with various non-falling film experiments. Separately, experiments in an inclined plate thin falling film apparatus were carried out to determine the β distribution and associated mass transfer. It is found that there is reasonable concurrence with the mentioned empirical relation, hence suggesting the general applicability of β characterizing the scalar transport across the gas-liquid interface independent of the means of turbulence generation. © 2008 Elsevier Ltd. All rights reserved.
dc.description.urihttp://libproxy1.nus.edu.sg/login?url=http://dx.doi.org/10.1016/j.ces.2008.02.014
dc.sourceScopus
dc.subjectFalling films
dc.subjectHanratty's β
dc.subjectHydrodynamics
dc.subjectInterface
dc.subjectMass transfer
dc.subjectTurbulence
dc.typeArticle
dc.contributor.departmentMECHANICAL ENGINEERING
dc.description.doi10.1016/j.ces.2008.02.014
dc.description.sourcetitleChemical Engineering Science
dc.description.volume63
dc.description.issue9
dc.description.page2559-2575
dc.description.codenCESCA
dc.identifier.isiut000255937000021
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