A model for unsteady sediment transport in degrading alluvial channels

V.K. Sarda, R. Dhiman, R.K. Calay

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    The collection of data for unsteady/non-uniform sediment transport rates in a river below a reservoir, which arrests sediment from upstream, is very difficult. The establishment of a model for the determination of these sediment transport rates is equally difficult but important for the safety of a structure below the reservoirs. An indirect technique based on continuity equation for sediment transport has been used to obtain such data for unsteady/non-uniform flow conditions. Based on these data and dimensional analysis, a relationship for determination of sediment transport rate below high capacity reservoirs under unsteady-non-uniform conditions has been proposed which gave very high efficiency when checked with the available data for such conditions. As a consequence, a relationship for extent of degradation has also been established.
    Original languageEnglish
    Pages (from-to)21-32
    JournalThe International Journal of Multiphysics
    Issue number1
    Publication statusPublished - 2010


    • degradation
    • dimensional analysis
    • high capacity reservoir
    • sediment transport
    • unsteady/non-uniform flow


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