Forces effecting aerosol particle deposited on the filter fibre
Tomasz Ciach , Arkadiusz Moskal
AbstractIn 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.
|Journal series||Journal of Aerosol Science, ISSN 0021-8502|
|Keywords in English||filtration, suspended particle, aerosols, fiber filter, interaction, adhesion, drag, numerical simulation|
|ASJC Classification||; ;|
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