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Aerodynamic wake study: oscillating model wind turbine within a turbulent boundary layer.

机译:气动尾流研究:在湍流边界层内振荡模型风力涡轮机。

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摘要

An experimental investigation on the aerodynamic wake behind a pitching and/or heaving model wind turbine was performed. The study was split into two quasi-coupled phases; the first phase characterized the motion of an offshore floating wind turbine subjected to linear wave forcing, the second phase replicated specific motion cases, which were driven by results from phase I, on a model wind turbine within a turbulent boundary layer. Wake measurements were made in an effort to quantify fluctuations in the flow associated with the motion of the turbine. Weak differences were observed in the mean, streamwise velocity and turbulent fluctuations between the static and oscillating turbine cases. These weak differences were a result of opposing trends in the velocity quantities based on turbine motion phases. The wake oscillations created by the turbine motion was characteristic of a 2D wave (with convection in the x plane and amplitude in the z plane) with a relatively small amplitude as compared to urms..
机译:对俯仰和/或升沉模型风力涡轮机背后的空气动力学尾流进行了实验研究。该研究分为两个准耦合阶段。第一阶段表征海上浮式风力涡轮机受到线性波强迫的运动,第二阶段在湍流边界层内的模型风力涡轮机上复制特定运动案例,这些案例是由阶段I的结果驱动的。进行尾流测量是为了量化与涡轮机运动相关的流量波动。在静态和振荡涡轮机壳之间的平均,沿流速度和湍流波动中观察到微弱的差异。这些弱的差异是基于涡轮机运动阶段的速度量相反趋势的结果。涡轮机运动产生的尾波振荡是2D波的特征(在x平面上具有对流,在z平面上具有振幅),与urms相比振幅较小。

著录项

  • 作者

    Feist, Christopher J.;

  • 作者单位

    University of Minnesota.;

  • 授予单位 University of Minnesota.;
  • 学科 Engineering Mechanical.;Engineering Marine and Ocean.;Energy.
  • 学位 M.S.
  • 年度 2015
  • 页码 111 p.
  • 总页数 111
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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