Author(s): B. R. Samaga; K. G. Ranga Raju; R. J. Garde

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Abstract: Rouse's equation and some of the recently developed equations for concentration distribution in the case of flow in an open channel have been checked for their accuracy with the help of data ofsuspended-sediment concentration-distribution of the individual fractions in a mixture. The agreement between predictions and measurements is not found to be satisfactory. It is found that the sediment distribution exponent for any size in the mixture is not constant over the whole depth of flow. A two-layer model is accordingly suggested herein to describe the sediment distribution in the vertical. A predictor for the reference concentration at 0.2D is also suggested. The model showed satisfactory agreement with the measurements on the Rhine river and the Middle Rio Grande river.

DOI: https://doi.org/10.1080/00221688509499339

Year: 1985