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    Three-Dimensional Numerical Simulation and Analysis of Flows around a Submerged Weir in a Channel Bendway

    Source: Journal of Hydraulic Engineering:;2005:;Volume ( 131 ):;issue: 008
    Author:
    Yafei Jia
    ,
    Steve Scott
    ,
    Yichun Xu
    ,
    Suiliang Huang
    ,
    Sam S. Wang
    DOI: 10.1061/(ASCE)0733-9429(2005)131:8(682)
    Publisher: American Society of Civil Engineers
    Abstract: To improve navigation conditions for barges passing through river channels, many submerged weirs (SWs) have been installed along the bendways of many waterways by the U.S. Army Corps of Engineers. This paper presents results from three-dimensional numerical simulations that were conducted to study the helical secondary current (HSC) and the near-field flow distribution around one SW. The simulated flow fields around a SW in a scale physical model were validated using experimental data. The three-dimensional flow fields around a SW, the influence of the SW on general HSC, and the implication of effectiveness of submerged weirs to realign the flow field and improve navigability in bendways were analyzed. The numerical simulations indicated that the SW significantly altered the general HSC. Its presence induced a skewed pressure difference cross its top and a triangular-shaped recirculation to the downstream side. The over-top flow tends to realign toward the inner bank and therefore improves conditions for navigation.
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      Three-Dimensional Numerical Simulation and Analysis of Flows around a Submerged Weir in a Channel Bendway

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    http://yetl.yabesh.ir/yetl1/handle/yetl/25957
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    contributor authorYafei Jia
    contributor authorSteve Scott
    contributor authorYichun Xu
    contributor authorSuiliang Huang
    contributor authorSam S. Wang
    date accessioned2017-05-08T20:45:12Z
    date available2017-05-08T20:45:12Z
    date copyrightAugust 2005
    date issued2005
    identifier other%28asce%290733-9429%282005%29131%3A8%28682%29.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/25957
    description abstractTo improve navigation conditions for barges passing through river channels, many submerged weirs (SWs) have been installed along the bendways of many waterways by the U.S. Army Corps of Engineers. This paper presents results from three-dimensional numerical simulations that were conducted to study the helical secondary current (HSC) and the near-field flow distribution around one SW. The simulated flow fields around a SW in a scale physical model were validated using experimental data. The three-dimensional flow fields around a SW, the influence of the SW on general HSC, and the implication of effectiveness of submerged weirs to realign the flow field and improve navigability in bendways were analyzed. The numerical simulations indicated that the SW significantly altered the general HSC. Its presence induced a skewed pressure difference cross its top and a triangular-shaped recirculation to the downstream side. The over-top flow tends to realign toward the inner bank and therefore improves conditions for navigation.
    publisherAmerican Society of Civil Engineers
    titleThree-Dimensional Numerical Simulation and Analysis of Flows around a Submerged Weir in a Channel Bendway
    typeJournal Paper
    journal volume131
    journal issue8
    journal titleJournal of Hydraulic Engineering
    identifier doi10.1061/(ASCE)0733-9429(2005)131:8(682)
    treeJournal of Hydraulic Engineering:;2005:;Volume ( 131 ):;issue: 008
    contenttypeFulltext
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