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    Turbulence Measurements in Model Settling Tank

    Source: Journal of Hydraulic Engineering:;1990:;Volume ( 116 ):;issue: 001
    Author:
    D. A. Lyn
    ,
    W. Rodi
    DOI: 10.1061/(ASCE)0733-9429(1990)116:1(3)
    Publisher: American Society of Civil Engineers
    Abstract: Turbulence measurements are made in the inlet region of a rectangular laboratory settling tank with a two‐component laser‐Doppler system. The flow fields from a plane jet impinging on two types of deflector, at constant depth and discharge, are studied. Effects due to density differences or the presence of sediment are not considered. Although the two flow fields exhibit marked difference in terms of the extent of their recirculation regions and the extent of regions of high turbulent transport, flow‐through curves from tracer tests indicate little difference. A comparison to the case without deflector shows improved hydraulic efficiency, attributable to the inhibition of short‐circuiting effects or to increased initial mixing. Strong and complex three‐dimensional effects are found. Implications for design as well as numerical modeling are discussed.
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      Turbulence Measurements in Model Settling Tank

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    contributor authorD. A. Lyn
    contributor authorW. Rodi
    date accessioned2017-05-08T20:40:43Z
    date available2017-05-08T20:40:43Z
    date copyrightJanuary 1990
    date issued1990
    identifier other%28asce%290733-9429%281990%29116%3A1%283%29.pdf
    identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/23235
    description abstractTurbulence measurements are made in the inlet region of a rectangular laboratory settling tank with a two‐component laser‐Doppler system. The flow fields from a plane jet impinging on two types of deflector, at constant depth and discharge, are studied. Effects due to density differences or the presence of sediment are not considered. Although the two flow fields exhibit marked difference in terms of the extent of their recirculation regions and the extent of regions of high turbulent transport, flow‐through curves from tracer tests indicate little difference. A comparison to the case without deflector shows improved hydraulic efficiency, attributable to the inhibition of short‐circuiting effects or to increased initial mixing. Strong and complex three‐dimensional effects are found. Implications for design as well as numerical modeling are discussed.
    publisherAmerican Society of Civil Engineers
    titleTurbulence Measurements in Model Settling Tank
    typeJournal Paper
    journal volume116
    journal issue1
    journal titleJournal of Hydraulic Engineering
    identifier doi10.1061/(ASCE)0733-9429(1990)116:1(3)
    treeJournal of Hydraulic Engineering:;1990:;Volume ( 116 ):;issue: 001
    contenttypeFulltext
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