Abstract

This chapter explores the model representation of granular media. Fundamental study of granular filtration requires that the granular media should be taken into consideration as assemblies of collectors. With this assumption, the chapter takes into consideration the specifications of the collectors' structure, geometry, size, and size distribution as well as the flow fields around them. This chapter discusses the methods for making such representations based on various porous media models for both clean and clogged filter media. A basic approach to predict granular filtration performance must rest on various things. One should have an understanding of the processes involving the flow of fluid suspensions through granular media. The nature and mechanisms of the transport and subsequent deposition of particles from the suspension to the individual granules of which the media are comprised should be considered. And the effect of particle deposition on the suspension flow, transport, adhesion, and possibly reentrainment should also be taken into account. Fundamental studies of any of the above-mentioned problems require that the granular media be described quantitatively.

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