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    Modes of Bed-Load Movement on a Smooth Rigid Surface

    Source: Journal of Hydraulic Engineering:;2011:;Volume ( 137 ):;issue: 010
    Author:
    C. S. James
    ,
    N. Bulovic
    ,
    E. Naidoo
    DOI: 10.1061/(ASCE)HY.1943-7900.0000400
    Publisher: American Society of Civil Engineers
    Abstract: Sediment grains transported as supply-limited bed load on a rigid surface move either discretely or collectively as bed forms, with significantly different effective grain speeds and active storage volumes. The adopted mode has implications for sediment sorting and heavy mineral placer formation, dispersal of grain-associated pollutants, and accumulation and flushing of sediment deposits in unlined canals and sewers. The threshold condition between the two modes has been established for a smooth surface from flume experiments with different sediment types, flow conditions, and sediment supply rates. This is expressed in terms of a relationship between the sediment movability number, a dimensionless bed load parameter, and a grain shear Reynolds number.
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      Modes of Bed-Load Movement on a Smooth Rigid Surface

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    contributor authorC. S. James
    contributor authorN. Bulovic
    contributor authorE. Naidoo
    date accessioned2017-05-08T21:51:06Z
    date available2017-05-08T21:51:06Z
    date copyrightOctober 2011
    date issued2011
    identifier other%28asce%29hy%2E1943-7900%2E0000426.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/64247
    description abstractSediment grains transported as supply-limited bed load on a rigid surface move either discretely or collectively as bed forms, with significantly different effective grain speeds and active storage volumes. The adopted mode has implications for sediment sorting and heavy mineral placer formation, dispersal of grain-associated pollutants, and accumulation and flushing of sediment deposits in unlined canals and sewers. The threshold condition between the two modes has been established for a smooth surface from flume experiments with different sediment types, flow conditions, and sediment supply rates. This is expressed in terms of a relationship between the sediment movability number, a dimensionless bed load parameter, and a grain shear Reynolds number.
    publisherAmerican Society of Civil Engineers
    titleModes of Bed-Load Movement on a Smooth Rigid Surface
    typeJournal Paper
    journal volume137
    journal issue10
    journal titleJournal of Hydraulic Engineering
    identifier doi10.1061/(ASCE)HY.1943-7900.0000400
    treeJournal of Hydraulic Engineering:;2011:;Volume ( 137 ):;issue: 010
    contenttypeFulltext
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