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首页> 外文会议>34th Wind energy symposium 2016 >Flow Curvature Effects for VAWT: a Review of Virtual Airfoil Transformations and Implementation in XFOIL
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Flow Curvature Effects for VAWT: a Review of Virtual Airfoil Transformations and Implementation in XFOIL

机译：VAWT的流曲率效应：XFOIL中的虚拟机翼转换及其实现的回顾

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摘要

Blades on a Vertical Axis Wind Turbine (VAWT) experience curved streamlines, caused by the rotation of the turbine. This phenomenon is known as flow curvature and has effects on the aerodynamic loading of the blades. Several authors have proposed methods to account for flow curvature, resulting in methods to transform the original airfoil in curved flow to a virtual airfoil, which can be analysed in straight flow. This paper reviews multiple of such virtual airfoil transformations and compares the outcomes. All methods show good correspondence to the curved flow pressure distribution, but small errors remain that are intrinsic to the conformal methods used. It is shown that VAWT rotation is equivalent to an eternal pitching motion. Using this similarity, flow curvature modeling has been added to the airfoil analysis tool XFOIL. The various changes have been made in the inviscid solver, in a way that the viscous solver need not to be changed.
机译：垂直轴风力涡轮机（VAWT）上的叶片会受到由涡轮机旋转引起的弯曲流线的影响。这种现象被称为流曲率，并且对叶片的空气动力学载荷有影响。一些作者提出了解决流曲率的方法，从而产生了将弯曲流中的原始翼型转换为虚拟翼型的方法，可以在直流中对其进行分析。本文回顾了这种虚拟机翼转换的多种情况，并比较了结果。所有方法都显示出与弯流压力分布的良好对应关系，但是仍然存在小误差，这是所使用的共形方法固有的。结果表明，VAWT旋转等同于永恒的俯仰运动。使用这种相似性，流曲率建模已添加到翼型分析工具XFOIL中。在无粘性求解器中已进行了各种更改，从而无需更改粘性求解器。

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  • 来源
    《34th Wind energy symposium 2016》|2016年|593-601|共9页
  • 会议地点 San Diego CA(US)
  • 作者

    Sander van der Horst; Jelmer van de Wiel; Carlos Simao Ferreira; Nestor Ramos Garcia;

  • 作者单位

    Delft University of Technology - DU Wind, Delft, 2629HS, The Netherlands;

    Delft University of Technology - DU Wind, Delft, 2629HS, The Netherlands;

    Delft University of Technology - DU Wind, Delft, 2629HS, The Netherlands;

    Technical University of Denmark - Wind Energy, Kongens Lyngby, 2800, Denmark;

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  • 正文语种 eng
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