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    Hydrokinetic Turbines in Yawed Conditions: Toward Synergistic Fluvial Installations

    Source: Journal of Hydraulic Engineering:;2020:;Volume ( 146 ):;issue: 004
    Author:
    Mirko Musa
    ,
    Giulia Ravanelli
    ,
    Walter Bertoldi
    ,
    Michele Guala
    DOI: 10.1061/(ASCE)HY.1943-7900.0001707
    Publisher: ASCE
    Abstract: Laboratory experiments were performed in critical mobility conditions to study the effects of an in-stream horizontal axis turbine in yawed conditions. The misalignment between the rotor axis and the incoming flow velocity is observed to alter the near and far wake of the turbine, as well as the scour and deposition patterns in the proximity of the monopile support tower. Various hydraulic conditions may lead to such misalignment, e.g., as a result of complex fluvial bathymetries distorting the flow or as a strategy to steer the wake away from downstream units and maximize energy production in a turbine array. The research first investigates the simplest case of a single turbine deployed along the channel centerline and oriented at different yaw angles to study the wake deflection and the turbine performance. A second set of experiments is performed moving the turbine relatively close to a nonerodible lateral wall to explore a potential passive yaw control strategy devoted to protect the banks from erosion by steering the wake toward the channel center and favor deposition along the bank.
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      Hydrokinetic Turbines in Yawed Conditions: Toward Synergistic Fluvial Installations

    URI
    http://yetl.yabesh.ir/yetl1/handle/yetl/4265010
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    contributor authorMirko Musa
    contributor authorGiulia Ravanelli
    contributor authorWalter Bertoldi
    contributor authorMichele Guala
    date accessioned2022-01-30T19:17:37Z
    date available2022-01-30T19:17:37Z
    date issued2020
    identifier other%28ASCE%29HY.1943-7900.0001707.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4265010
    description abstractLaboratory experiments were performed in critical mobility conditions to study the effects of an in-stream horizontal axis turbine in yawed conditions. The misalignment between the rotor axis and the incoming flow velocity is observed to alter the near and far wake of the turbine, as well as the scour and deposition patterns in the proximity of the monopile support tower. Various hydraulic conditions may lead to such misalignment, e.g., as a result of complex fluvial bathymetries distorting the flow or as a strategy to steer the wake away from downstream units and maximize energy production in a turbine array. The research first investigates the simplest case of a single turbine deployed along the channel centerline and oriented at different yaw angles to study the wake deflection and the turbine performance. A second set of experiments is performed moving the turbine relatively close to a nonerodible lateral wall to explore a potential passive yaw control strategy devoted to protect the banks from erosion by steering the wake toward the channel center and favor deposition along the bank.
    publisherASCE
    titleHydrokinetic Turbines in Yawed Conditions: Toward Synergistic Fluvial Installations
    typeJournal Paper
    journal volume146
    journal issue4
    journal titleJournal of Hydraulic Engineering
    identifier doi10.1061/(ASCE)HY.1943-7900.0001707
    page04020019
    treeJournal of Hydraulic Engineering:;2020:;Volume ( 146 ):;issue: 004
    contenttypeFulltext
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