Model for gas-liquid flow through wet porous medium

Agranovski, I. E., Braddock, R. D., Kristensen, N. P., Crozier, S. and Myojo, T. (2001) Model for gas-liquid flow through wet porous medium. Chemical Engineering & Technology, 24 11: 1151-1155. doi:10.1002/1521-4125(200111)24:11<1151::AID-CEAT1151>3.0.CO;2-6

Author Agranovski, I. E.
Braddock, R. D.
Kristensen, N. P.
Crozier, S.
Myojo, T.
Title Model for gas-liquid flow through wet porous medium
Journal name Chemical Engineering & Technology   Check publisher's open access policy
ISSN 0930-7516
Publication date 2001-01-01
Sub-type Article (original research)
DOI 10.1002/1521-4125(200111)24:11<1151::AID-CEAT1151>3.0.CO;2-6
Volume 24
Issue 11
Start page 1151
End page 1155
Total pages 5
Place of publication Berlin
Publisher Wiley-v C H Verlag Gmbh
Language eng
Abstract A method involving bubbling of air through a fibrous filter immersed in water has recently been investigated (Agranovski et al. [1]). Experimental results showed that the removal efficiency for ultra-fine aerosols by such filters was greatly increased compared to dry filters. Nuclear Magnetic Resonance (NMR) imaging was used to examine the wet filter and to determine the nature of the gas flow inside the filter (Agranovski et al. [2]). It was found that tortuous preferential pathways (or flow tubes) develop within the filter through which the air flows and the distribution of air and water inside the porous medium has been investigated. The aim of this paper is to investigate the geometry of the pathways and to make estimates of the flow velocities and particle removal efficiency in such pathways. A mathematical model of the flow of air along the preferred pathways has been developed and verified experimentally. Even for the highest realistic gas velocity the flow field was essentially laminar (Re approximate to 250). We solved Laplace's equation for stream function to map trajectories of particles and gas molecules to investigate the possibility of their removal from the carrier.
Keyword Engineering, Chemical
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Information Technology and Electrical Engineering Publications
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 1 times in Thomson Reuters Web of Science Article | Citations
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Created: Mon, 13 Aug 2007, 22:39:58 EST