Effect of filter inhomogenity on deep-bed filtration process – A CFD investigation

Document Type: Research Article

Authors

1 Warsaw University of Technology, Faculty of Chemical and Process Engineering

2 Faculty of Chemical and Process Engineering, Warsaw University of Technology, Warsaw, Poland

Abstract

Aerosol filtration in fibrous filters is one of the principal methods of solid particles removal of from gas stream. The classical theory of depth filtration is based on the assumption of existing single fiber efficiency, which may be used to recalculation of overall efficiency of entire filter. There are several reasons for inappropriate estimation of the single fiber efficiency including assumption of negligible effect of presence of neighboring fibers and perpendicular orientation of the homogenous fibers. The aim of this work is to investigate influence of mesoscale inhomogenity on fibrous filters performance using Computational Fluid Dynamics in models of filters differed by internal structure.

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