Turbulence Characteristics of Sediment‐Laden Flows in Open Channels
Publication: Journal of Hydraulic Engineering
Volume 118, Issue 7
Abstract
The turbulence characteristics of sediment‐laden flows in open channels are investigated using two‐component laser‐Doppler velocimetry. Suspensions of well‐sorted sands with diameters ranging from 0.15 mm to 0.24 mm, flowing over nominally flat beds, both fixed and erodible, are studied in a tiltable, recirculating flume. Various conceptual models that have been proposed to explain the mean‐field profiles are examined for consistency with respect to their implications for higher‐order characteristics. No evidence is found to support either the traditional model, associated with a decrease in the von Kármán constant, or the more recently proposed models based on simple analogies to slightly stably stratified wall‐bounded flows. A model based on small‐scale fluid‐particle interaction is suggested as more promising.
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 118 • Issue 7 • July 1992
Pages: 971 - 988
Copyright
Copyright © 1992 ASCE.
History
Published online: Jul 1, 1992
Published in print: Jul 1992
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