The flow of granular solids through circular orifices

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Abstract

It has been shown that the use of the bulk density term in place of the particle density, in the equation of flow for granular solids passing through a circular orifice, very largely eliminates differences due to the shape, rugosity, density, porosity and friction of the particles.

The equation

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has been tested on seven different materials and has been found to predict the flow of single and binary systems with an overall accuracy of ±5% and ±10% respectively.

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