Effect of Filter Inhomogeneity on Deep-Bed Filtration Process – A CFD Investigation

Document Type: Research Article

Authors

Warsaw University of Technology, Faculty of Chemical and Process Engineering, Ul. Waryńskiego 1, 00-645 Warsaw, POLAND

Abstract

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

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