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A two-dimensional transverse vortex wind tunnel for PIV investigation of airfoil vortex interaction.

机译:用于机翼旋涡相互作用的PIV研究的二维横向旋涡风洞。

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摘要

A novel wind tunnel has been designed and built to allow PIV (Particle Image Velocimetry) investigation of 2D Airfoil Vortex Interaction (AVI). AVI is a simplified representation of parallel Blade Vortex Interaction (BVI), a phenomenon typical of rotorcraft aerodynamics and characterized by the interaction of the rotor wake vortex with subsequent blades. In AVI, the wake vortex is represented by a vortex, having a rotation axis perpendicular to the direction of the flow, convecting downstream and interacting with the target airfoil, representing the blade. The features of the wind tunnel include a high aspect ratio test section simulating 2D unbounded flow at 80 m/s, a novel design application of CFD for contraction optimization, the incorporation of a modestly priced commercial air-handling centrifugal blower as the wind tunnel fan, and the tunnel's compatibility with a proposed vortex generator, which permits the generation of a single, repeatable transverse vortex. The concept of this vortex generator is novel and involves plunging of an airfoil from the far field to the location of interest in the flow. When the airfoil motion is suddenly arrested, the bound vorticity accumulated due to the change in flow incidence caused by the plunge will "roll up" into a single vortex of predictable circulation and core diameter.
机译:已经设计并建造了一种新颖的风洞,以允许对2D翼型涡旋相互作用(AVI)进行PIV(颗粒图像测速)研究。 AVI是平行叶片涡旋相互作用(BVI)的简化表示,这是旋翼航空器动力学的典型现象,其特征是旋翼尾涡与后续叶片之间的相互作用。在AVI中,尾流涡流由涡流表示,其旋转轴垂直于流向,在下游对流并与代表叶片的目标机翼相互作用。风洞的功能包括:以80 m / s的速度模拟2D无限制流动的高纵横比测试部分,用于收缩优化的CFD新颖设计应用,将价格适中的商用空气处理离心鼓风机作为风洞风扇,以及该隧道与拟议的涡旋发生器的兼容性,从而可生成单个可重复的横向涡旋。该涡旋发生器的概念是新颖的,涉及将翼型从远场插入流动中的感兴趣位置。当机翼运动突然停止时,由于骤降引起的流率变化而累积的束缚涡旋将“卷起”为可预测的循环和芯径的单个旋涡。

著录项

  • 作者

    Brassard, Daniel.;

  • 作者单位

    Carleton University (Canada).;

  • 授予单位 Carleton University (Canada).;
  • 学科 Engineering Mechanical.
  • 学位 M.A.Sc.
  • 年度 2005
  • 页码 76 p.
  • 总页数 76
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 机械、仪表工业;
  • 关键词

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