Modelling droplet motion and interfacial tension in filters collecting liquid aerosols

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Title Modelling droplet motion and interfacial tension in filters collecting liquid aerosols
Author Mullins, B.J.; Braddock, Roger David; Agranovski, Igor E
Journal Name Mathematics and Computers in Simulation
Year Published 2011
Place of publication Netherlands
Publisher Elsevier BV
Abstract Extensive experimental investigations have shown some of the differences between the behaviours of the barrel and the clamshell shapes of droplets on filter fibres in flow fields. Realistic flow velocities (such as those used in many industrial filter systems)were utilised. The forces acting are air drag, interfacial tension and gravity. The properties of the interfacial restoring force are modelled, and show agreement with the experimental results, at least in the linear extension region before the onset of oscillatory behaviour of the droplets(induced by instability of the flowfield). The model for the oscillatory behaviour is explored, and the natural frequencies of oscillation in the radial and transverse directions are shown to be the same, for the barrel shape. The clamshell shape also has the same natural frequencies, but they are different to those of the barrel shape. The coupling of the radial and transverse oscillation models is explored for both the barrel and clamshell shape. Some contact angle results are given, both without airflow acting on the droplet and with increasing airflow.
Peer Reviewed Yes
Published Yes
Alternative URI
Volume 81
Issue Number 7
Page from 1257
Page to 1271
ISSN 0378-4754
Date Accessioned 2011-03-03
Language en_US
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Optimisation
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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