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Experiments on Chute Flows of Granular Materials

Ahn, H. and Brennen, C.E. and Sabersky, R. H. (1987) Experiments on Chute Flows of Granular Materials. In: Micromechanics of granular materials : proceedings of the U.S./Japan Seminar on the Micromechanics of Granular Materials, Sendai-Zao, Japan, October 26-30, 1987. Studies in Applied Mechanics. No.20. Elsevier , New York, pp. 339-348. ISBN 0444705236 http://resolver.caltech.edu/CaltechAUTHORS:AHNmgm87

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Abstract

Experiments on continuous, steady flows of granular materials down an inclined channel or chute were made with the object of acquiring information on the rheological properties of the granular material flow and the nature of the boundary condition on the base of the channel. Specifically measurements were made of the mean material velocities and velocity profiles on all boundaries of the flow using cross-correlation of two neighboring fibre-optic displacement probes. The output from these probes was used to obtain (1) the unsteady or random component of the particle velocity in the longitudinal direction and (2) a measure of the volume fraction of the flow in contact with the base by counting the frequency of passage of the particles. Measurement was also made of the depth of the flow, the mass flow rate and the shear stress on the base. The latter employed a strain-gauged shear force plate built into the base. The experiments are currently in progress and so further data will be presented at a later date. Nevertheless the preliminary data have yielded a number of interesting features.


Item Type:Book Section
Additional Information:The authors are most grateful for the help given by S. Wakayama, D. Pillsbury, and C. Bertani during the conduct of this research. This work was supported by the National Science Foundation under Grant No. MEA 8400322. Some support from Union Carbide is also gratefully acknowledged.
Record Number:CaltechAUTHORS:AHNmgm87
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:AHNmgm87
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:30
Collection:CaltechAUTHORS
Deposited By: Christopher Brennen
Deposited On:30 Dec 2004
Last Modified:26 Dec 2012 08:38

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