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Prescribed Velocity Method for Simulation of Aerofoil Gust Responses

机译：规定的速度法模拟机翼阵风响应

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摘要

A new method for modeling the interaction of an aerofoil with a gust using a prescribed velocity approach, called the split velocity method is presented. This approach effectively rearranges the governing equations into a form that allows for more efficient calculation and includes both the effect of the gust on the aerofoil and the effect of the aerofoil on the gust. The convection of gusts, through the domain from the far field, is investigated using the new method for a range of 1 -cosine gusts. The results obtained are compared to an existing prescribed velocity approach called the field velocity method, which neglects the effect of the aerofoil on the gust. The two prescribed velocity approaches agree well for longer gusts. For shorter gusts where the gust length is close to the chord of the aerofoil, the new approach produces better results. Details of a linearized version of the split velocity method are also given. The linearized version is shown to agree well with the full method for cases when the gust does not result in large shock motions.
机译：提出了一种使用规定的速度方法对翼型与阵风的相互作用进行建模的新方法，称为分裂速度方法。这种方法有效地将控制方程式重新排列为一种形式，从而可以进行更有效的计算，并且包括阵风对翼型的影响和翼型对阵风的影响。使用新方法对范围为1-余弦的阵风，对来自远场的阵风进行对流。将获得的结果与现有的规定速度方法（称为场速度方法）进行比较，该方法忽略了机翼对阵风的影响。对于较长阵风，两种规定的速度方法非常吻合。对于阵风长度接近机翼弦的较短阵风，新方法可产生更好的效果。还给出了分裂速度方法的线性化版本的详细信息。对于阵风不会导致较大震动的情况，线性化版本与完整方法非常吻合。

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  • 来源
    《Journal of Aircraft》 |2015年第1期|64-76|共13页
  • 作者

    C. Wales; D. Jones; A. Gaitonde;

  • 作者单位

    University of Bristol, Bristol, England BS8 1TR, United Kingdom;

    University of Bristol, Bristol, England BS8 1TR, United Kingdom;

    University of Bristol, Bristol, England BS8 1TR, United Kingdom;

  • 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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