Abstract
An experimental study on the characteristics of sediment‐laden flow in rigid boundary open channels is reported. The data indicate that the friction factor for sediment‐laden flows may be larger or smaller than that for clear water flow under the same conditions. The conditions leading to decrease or increase in the friction factor have been identified and a predictor developed for the friction factor when it is greater than that for clear water flow. A velocity defect law has been obtained in terms of Y/Y0 and . The maximum velocity, in turn, is related to the average velocity in the cross section, the friction factor, and the aspect ratio. The results from the proposed law of velocity distribution are better than those from the existing laws for sediment‐laden flow in rigid boundary channels.
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