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首页> 外文期刊>Bulletin of the American Physical Society >APS -70th Annual Meeting of the APS Division of Fluid Dynamics- Event - Classification of Rotor Induced Shearing Events in the Near Wake of a Wind Turbine Array Boundary Layer
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APS -70th Annual Meeting of the APS Division of Fluid Dynamics- Event - Classification of Rotor Induced Shearing Events in the Near Wake of a Wind Turbine Array Boundary Layer

机译：APS-流体动力学APS部门第70届年会-事件-风力涡轮机阵列边界层近尾时转子诱发的剪切事件的分类

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Flow perturbation induced by a turbine rotor?imposes?considerable turbulence and shearing effects in the near wake of a turbine, altering the efficiency?of?subsequent units within a wind farm array. Previous methods have characterized near wake vorticity of a turbine and recovery distance of various turbine array configurations. This study aims to build on previous analysis with respect to a turbine rotor within an array and develop a model to examine stress events and energy contribution in the near wake due to rotational effects. Hot wire anemometry was employed downstream of a turbine centrally located in the third row of a 3x3 array. Data considered points planar to the rotor and included simultaneous streamwise and wall-normal velocities as well as concurrent streamwise and transverse velocities. Conditional analysis of Reynolds stresses induced by the rotor agree with former near wake research, and examination of stresses in terms of streamwise and transverse velocity components depicts areas of significant rotational effects. Continued analysis includes spectral decomposition and conditional statistics to further characterize shearing events at various points considering the swept area of the rotor.
机译：涡轮机转子引起的流动扰动在涡轮机的近尾流处产生相当大的湍流和剪切效应，从而改变了风电场阵列中后续机组的效率。先前的方法已经表征了涡轮的近尾涡度和各种涡轮阵列构造的恢复距离。这项研究旨在基于对阵列中的涡轮转子的先前分析，并开发一种模型来检查由于旋转效应而在近尾流中产生的应力事件和能量贡献。在3x3阵列第三排中心位置的涡轮机下游采用热线风速仪。所考虑的数据指向转子的平面，并且包括同时的水流和壁法向速度以及同时的水流和横向速度。由转子引起的雷诺应力的条件分析与以前的近尾流研究相吻合，并且在流向和横向速度分量方面对应力的检查描绘了显着的旋转效应区域。继续进行的分析包括频谱分解和条件统计，以进一步考虑转子的扫掠面积来表征各个点的剪切事件。

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