Suspension Mechanics and Its Relation to Granular Flow

Authored by: Jeffrey F. Morris

Handbook of Granular Materials

Print publication date:  October  2015
Online publication date:  March  2016

Print ISBN: 9781466509962
eBook ISBN: 9781466509979
Adobe ISBN:

10.1201/b19291-15

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Abstract

This chapter addresses suspensions and considers their relationship to granular flows. By a suspension, we typically mean a mixture composed of solid particles within a fluid, under conditions where the particles remain suspended as opposed to settling. For example, under normal gravity environments, a fine sand that settles slowly in water may be readily redispersed by the water flowing over it, and this mixture may be termed a suspension. The same fine sand in air would rapidly settle to form a layer of contacting particles that might still flow, but would be considered a granular flow. A third form is a slurry, defined as a material needing stirring or other agitation to maintain the particles in suspension but whose properties may be otherwise described roughly as suspensions.

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