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首页> 外文期刊>Journal of Heat Transfer >Thermal Response of Supersonic Airflow to a Fin Protrusion Situated on a Curved Surface
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Thermal Response of Supersonic Airflow to a Fin Protrusion Situated on a Curved Surface

机译：超音速气流对曲面上翅片凸起的热响应

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摘要

Aerodynamic heating of an airfoil with a short fin attached to its surface is computationally investigated. This research is motivated by the fact that the gap fillers inserted between the insulation tiles of the space shuttle thermal protection system may sometimes get loose and extend beyond the surface and cause an uneven aerodynamic heating of the surface. It is often difficult for engineers to determine whether the protruded gap filler would cause an undesirable effect in the boundary layer including early turbulence transition or Shockwaves that could cause an unsafe increase in surface temperature. In this investigation, the supersonic flow over NACA 0012 airfoil on which a short fin is attached is studied using a computational approach. The method is validated by the experimental data available in published literature. The results indicate a significant increase in the surface temperature in the vicinity of the fin. This elevated temperature extends downstream beyond the location of the fin and covers a large portion of the airfoil downstream of the fin. The fin induces an oblique shockwave followed by an expansion wave.
机译：通过计算研究了翼片表面附着有短翅片的空气动力学加热。这项研究的动机是，在航天飞机热保护系统的隔热砖之间插入的缝隙填充物有时会变松并延伸到表面以外，并导致表面不均匀的空气动力加热。工程师通常很难确定突出的间隙填充物是否会在边界层中引起不良影响，包括可能引起表面温度不安全升高的早期湍流转变或冲击波。在这项研究中，使用计算方法研究了附着短翅片的NACA 0012机翼上的超音速流动。通过公开文献中提供的实验数据验证了该方法。结果表明，鳍片附近的表面温度显着升高。这种升高的温度向下游延伸到鳍片的位置之外，并覆盖了鳍片下游的大部分翼型。鳍片引起倾斜的冲击波，然后产生膨胀波。

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  • 来源
    《Journal of Heat Transfer》 |2009年第11期|111704.1-111704.5|共5页
  • 作者

    Majid Molki; David W. Fasig;

  • 作者单位

    Department of Mechanical Engineering, Southern Illinois University Edwardsville, Edwardsville, IL 62025;

    Department of Mechanical Engineering, Southern Illinois University Edwardsville, Edwardsville, IL 62025;

  • 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
  • 中图分类
  • 关键词

    aerodynamic heating; gap filler; supersonic; space shuttle; shockwave; fin;

    机译：空气动力学加热间隙填充物超音速航天飞机;冲击波鳍;

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