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首页> 外文会议>Wind energy symposium 2018 >Effect of Oncoming Flow Turbulence on the Kinetic Energy Transport in the Flow Around a Model Wind Turbine
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Effect of Oncoming Flow Turbulence on the Kinetic Energy Transport in the Flow Around a Model Wind Turbine

机译：迎面而来的湍流对模型风轮机绕流中动能传递的影响

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摘要

An experimental study was conducted to investigate the effects of the atmospheric boundary layer winds on the near wake characteristics of a scaled three-blade Horizontal Axial Wind Turbine model. Both stereoscopic particle image velocimetry and two-dimensional particle image velocimetry were used to comprehensively measure the full velocity field behind the model wind turbine, including all three components of instantaneous velocity vectors from different views. Turbulence statistics derived from the measured instantaneous velocity vectors including ensemble-averaged velocities, vorticities, turbulence kinetic energies and Reynolds shear stresses are calculated to further quantify the wake characteristics. In addition, proper orthogonal decomposition is applied to identify the dominant vortex structures in the measured flow field. Our particular purpose is on the better understanding of the effect of inflow turbulence levels on the flow characteristics and unsteady vortex structures, as well as the transportation of kinetic energy in the near wake of wind turbine.
机译：进行了一项实验研究，以研究大气边界层风对比例缩放的三叶片水平轴流式风力涡轮机模型的近尾特性的影响。立体粒子图像测速仪和二维粒子图像测速仪均用于全面测量模型风力涡轮机背后的全速场，包括来自不同视图的瞬时速度矢量的所有三个分量。由测得的瞬时速度矢量得出的湍流统计数据，包括集合平均速度，涡度，湍流动能和雷诺剪切应力，可用来进一步量化尾流特性。另外，进行适当的正交分解以识别所测流场中的主要涡旋结构。我们的特殊目的是更好地了解流入湍流水平对流动特性和非稳定涡旋结构的影响，以及在风力涡轮机的近尾流中动能的传输。

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  • 来源
    《Wind energy symposium 2018》|2018年|169-177|共9页
  • 会议地点 Kissimmee(US)
  • 作者

    Wei Tian; Zhenyu Wang; Pavithra Premaratne; Hui Hu;

  • 作者单位

    School of Aeronautics and Astronautics. Shanghai Jiao Tong University. Shanghai 200240, China;

    Department of Aerospace Engineering, Iowa State University, Ames, Iowa, 50010, US;

    Department of Aerospace Engineering, Iowa State University, Ames, Iowa, 50010, US;

    Department of Aerospace Engineering, Iowa State University, Ames, Iowa, 50010, US;

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  • 正文语种 eng
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