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    Overbank Flow in Symmetrically Narrowing Floodplains

    Source: Journal of Hydraulic Engineering:;2004:;Volume ( 130 ):;issue: 004
    Author:
    D. Bousmar
    ,
    N. Wilkin
    ,
    J.-H. Jacquemart
    ,
    Y. Zech
    DOI: 10.1061/(ASCE)0733-9429(2004)130:4(305)
    Publisher: American Society of Civil Engineers
    Abstract: Experimental data are presented for flow in compound channels with symmetrically narrowing floodplains. In such a geometry, the flow behavior presents similarities with the more complex flow in a meandering compound channel, yet without the curvature effects, because of mass transfers between the floodplains and the main channel, and secondary currents induced in the main channel. An estimation of the momentum transfer generated by the mass transfer is found significant compared to the frictional losses. It mainly depends on the geometrical parameters and is practically independent of the friction slope. Free-surface profile computations are performed with the exchange discharge model (EDM) to incorporate the effects of the momentum transfer in terms of an additional head loss. Agreement was found between measured and computed water surfaces, thus validating the EDM approach.
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      Overbank Flow in Symmetrically Narrowing Floodplains

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    http://yetl.yabesh.ir/yetl1/handle/yetl/25707
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    contributor authorD. Bousmar
    contributor authorN. Wilkin
    contributor authorJ.-H. Jacquemart
    contributor authorY. Zech
    date accessioned2017-05-08T20:44:48Z
    date available2017-05-08T20:44:48Z
    date copyrightApril 2004
    date issued2004
    identifier other%28asce%290733-9429%282004%29130%3A4%28305%29.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/25707
    description abstractExperimental data are presented for flow in compound channels with symmetrically narrowing floodplains. In such a geometry, the flow behavior presents similarities with the more complex flow in a meandering compound channel, yet without the curvature effects, because of mass transfers between the floodplains and the main channel, and secondary currents induced in the main channel. An estimation of the momentum transfer generated by the mass transfer is found significant compared to the frictional losses. It mainly depends on the geometrical parameters and is practically independent of the friction slope. Free-surface profile computations are performed with the exchange discharge model (EDM) to incorporate the effects of the momentum transfer in terms of an additional head loss. Agreement was found between measured and computed water surfaces, thus validating the EDM approach.
    publisherAmerican Society of Civil Engineers
    titleOverbank Flow in Symmetrically Narrowing Floodplains
    typeJournal Paper
    journal volume130
    journal issue4
    journal titleJournal of Hydraulic Engineering
    identifier doi10.1061/(ASCE)0733-9429(2004)130:4(305)
    treeJournal of Hydraulic Engineering:;2004:;Volume ( 130 ):;issue: 004
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
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