Article ID Journal Published Year Pages File Type
155345 Chemical Engineering Science 2013 6 Pages PDF
Abstract

Gravitational settling of fine particles in a liquid-filled narrow channel has been studied experimentally and theoretically. Previous studies have shown that the particulate suspension with concentration interface toward gravitational direction behaves as a continuous fluid for high concentration and small particle size, and the gravity-induced instability at the interface enhances the settling motion of particles. The purpose of this study is to investigate how such a concentration interface behaves and how particles settle by gravity in various finite-sized channels. The experimental and theoretical results indicate that the aspect ratio of the channel cross-section is an important parameter for describing the settling behavior of particulate suspension. Moreover, we predict the velocity of the collective settling of particles in channels with arbitrary cross-section.

► Collective settling of particles in liquid-filled narrow channels is examined. ► The aspect ratio of channel cross-section is important for the settling behavior. ► The velocity of particles in channels with arbitrary cross-section is predicted.

Related Topics
Physical Sciences and Engineering Chemical Engineering Chemical Engineering (General)
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