Forces effecting aerosol particle deposited on the filter fibre

Tomasz Ciach , Arkadiusz Moskal

Abstract

In most of the theory of aerosol filtration on fibrous filters, it is assumed that after contact of particle and fibre a permanent bonding occurs. This could be a truth only at low gas velocities flowing through unloaded filter. For higher gas velocities and when filtering structure is loaded with dust some particles or particle cluster could be re-suspended. Drag forces produced by flowing medium cause this process. Other possible mechanism is a momentum transfer after particle-dendrite impact or physical vibration. These processes may act a loaded fibrous filter to work as an agglomerator. Theoretical and experimental data for estimation of particle to fibre adhesion forces are available but calculation or measurement of flowing gas drag forces acting on single particles or its clusters are more complicated to obtain. Calculation of this forces realized with Fluent computer program package are presented in this article.
Author Tomasz Ciach (FCPE / DBBE)
Tomasz Ciach,,
- Department of Biotechnology and Bioprocess Engineering
, Arkadiusz Moskal (FCPE / CIPE)
Arkadiusz Moskal,,
- Chair of Integrated Process Engineering
Journal seriesJournal of Aerosol Science, ISSN 0021-8502
Issue year2000
Vol31
PagesS456-S457
Keywords in Englishfiltration, suspended particle, aerosols, fiber filter, interaction, adhesion, drag, numerical simulation
ASJC Classification2310 Pollution; 2500 General Materials Science; 2304 Environmental Chemistry
URL http://cat.inist.fr/?aModele=afficheN&cpsidt=1496386
Languageen angielski
Score (nominal)35
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2014 = 1.586; WoS Impact Factor: 2006 = 2.952 (2) - 2007=2.606 (5)
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