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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.

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

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