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Experimental investigation of the impact of a propeller on a streamwise impinging vortex

机译：螺旋桨对流撞击涡流影响的实验研究

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摘要

By employing a wing-tip vortex impinging onto a propeller, the impact of the propeller on this vortex is studied with the help of Particle Image Velocimetry measurements. The effects of the propeller on the vortex are compared in the flow fields in the vicinity of the blades, i.e. one plane upstream and one plane downstream of the propeller. The meandering of the vortex downstream of the propeller increases by approximately one order of magnitude with respect to that upstream of the propeller. The circulation of the downstream vortex is at the same level as the upstream vortex, and this means the downstream vortex still has the potential to influence the airframe further downstream. As the vortex impinges at different radial positions of the propeller, the stretching effect depends on the local thrust of the propeller, which is different from the case with a vortex impinging on a steady wing. The Proper Orthogonal Decomposition analysis shows that the first and second modes of the flow upstream of the propeller are induced by the blade passing, whilst the third and the fourth modes are induced by the vortex meandering. (C) 2017 Elsevier Masson SAS. All rights reserved.
机译：通过采用翼尖涡流撞击螺旋桨，借助粒子图像测速技术测量螺旋桨对该涡流的影响。在叶片附近的流场中，即螺旋桨上游一平面和螺旋桨下游一平面，比较了螺旋桨对涡流的影响。螺旋桨下游的涡流相对于螺旋桨上游的涡流增加大约一个数量级。下游涡流的循环与上游涡流处于同一水平，这意味着下游涡流仍有可能影响更下游的机身。当涡旋撞击螺旋桨的不同径向位置时，拉伸效果取决于螺旋桨的局部推力，这与涡旋撞击在稳定机翼上的情况不同。适当的正交分解分析表明，螺旋桨上游的第一和第二模式是由叶片通过引起的，而第三和第四模式是由涡旋弯曲引起的。 （C）2017 Elsevier Masson SAS。版权所有。

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  • 来源
    《Aerospace science and technology》 |2017年第10期|582-594|共13页
  • 作者

    Yang Y.; Zhou T.; Sciacchitano A.; Veldhuis L. L. M.; Eitelberg G.;

  • 作者单位

    Delft Univ Technol, NL-2629 HS Delft, Netherlands|Dept Flight Performance & Prop, Kluyverweg 1, Delft, Netherlands;

    Delft Univ Technol, NL-2629 HS Delft, Netherlands|Hong Kong Univ Sci & Technol, Hong Kong 999077, Hong Kong, Peoples R China;

    Delft Univ Technol, NL-2629 HS Delft, Netherlands|Dept Aerodynam, Kluyverweg 2, Delft, Netherlands;

    Delft Univ Technol, NL-2629 HS Delft, Netherlands|Dept Flight Performance & Prop, Kluyverweg 1, Delft, Netherlands;

    Delft Univ Technol, NL-2629 HS Delft, Netherlands|Dept Flight Performance & Prop, Kluyverweg 1, Delft, Netherlands;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
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