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Sediment transport during unsteady settling in an inclined channel

Published online by Cambridge University Press:  21 April 2006

Gustav Amberg  and
Anders A. Dahlkild
Gustav Amberg
Affiliation:
Department of Hydromechanics, The Royal Institute of Technology, S-100 44 Stockholm, Sweden
Anders A. Dahlkild
Affiliation:
Department of Hydromechanics, The Royal Institute of Technology, S-100 44 Stockholm, Sweden
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Abstract

Settling of a dilute, monodisperse suspension between two inclined, narrowly spaced parallel plates is considered. Effects of sediment motion are accounted for. Lubrication theory and a simplified model for the particle motion lead to a system of two coupled nonlinear hyperbolic equations for the evolution of the two interfaces between clear fluid, suspension and sediment. Two problems are solved: batch settling and the filling of a channel that initially contains clear fluid. In the batch-settling case, the sediment has no major qualitative effect on the motion. In the filling problem, however, effects of sediment are important.

Information

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 185 , December 1987 , pp. 415 - 436
Copyright
© 1987 Cambridge University Press

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