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Analysis of factors affecting the aerodynamics of low reynolds number rotating wings.

机译：低雷诺数旋转机翼空气动力学的影响因素分析。

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摘要

A computational analysis was performed to address the effects of walls on wings rotating at a Reynolds number of 120. For rotation angles less than one revolution, a tip clearance of 0.5 chord-lengths is sufficient to approximate a wing rotating in an infinitely large volume of fluid. However, for a maximum rotation of two revolutions, a tip clearance of 5.0 chords is necessary. At the start of the second revolution, the wing encounters its wake, and the wake structure is significantly affected by low tip clearances. Lift and drag forces were measured experimentally for wings rotating at a Reynolds number of 10,000 while parameters including root cutout were varied. Root cutout significantly alters the lift and drag coefficients, including the location of a second local maximum in both lift and drag. The root-relative method of force non-dimensionalization provided the best comparison of force coefficients between cases with different root cutouts.
机译：进行了计算分析，以解决壁对以120雷诺数旋转的机翼的影响。对于小于一转的旋转角，弦长为0.5的叶尖间隙足以近似于无限大体积的机翼旋转。体液。但是，对于最大旋转两圈，需要5.0弦的叶尖间隙。在第二次公转开始时，机翼遇到尾流，尾流间隙低影响了尾流结构。实验测量了以10,000雷诺数旋转的机翼的升力和阻力，同时改变了包括根部切除在内的参数。根切除会显着改变升力和阻力系数，包括升力和阻力中第二个局部最大值的位置。力非因次的根相对方法提供了具有不同根切口的案例之间的力系数的最佳比较。

著录项

  • 作者

    Schlueter, Kristy Lynn.;

  • 作者单位

    University of Maryland, College Park.;

  • 授予单位 University of Maryland, College Park.;
  • 学科 Engineering Aerospace.
  • 学位 M.S.
  • 年度 2013
  • 页码 118 p.
  • 总页数 118
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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