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Effects of Porous Walls on Hypersonic Boundary Layers over a Sharp Cone

机译:多孔壁对尖锥高超声速边界层的影响

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摘要

A theoretical linear-stability analysis is used to consider the effect of a passive porous wall on the first Mack mode of a hypersonic boundary layer on a sharp slender cone. The effects of curvature and of the attached shock are included for axisymmetric and nonaxisymmetric disturbances. The flow in the hypersonic boundary layer is coupled to the flow in the porous layer. The theoretical models of the porous walls developed in previous studies are used for regular microstructures and random microstructures. The physical parameters chosen correspond to those of their studies. The resulting transcendental equations are solved numerically. Neutral solutions are presented, indicating a destabilizing effect of the porous wall. The spatial growth rates determined demonstrate that the porous wall leads to a significant increase in growth rates for nonaxisymmetric modes. The effects of varying the porous-wall parameters are investigated.
机译:理论线性稳定性分析用于考虑钝性多孔壁对尖细锥上高超声速边界层的第一麦克模式的影响。对于轴对称和非轴对称扰动,包括曲率和附加冲击的影响。高超音速边界层中的流与多孔层中的流耦合。先前研究中开发的多孔壁的理论模型用于规则的微观结构和随机的微观结构。选择的物理参数与他们的研究相对应。所得的先验方程通过数值求解。提出了中性溶液,表明多孔壁的去稳定作用。确定的空间增长率表明,多孔壁导致非轴对称模式的增长率显着提高。研究了改变多孔壁参数的影响。

著录项

  • 来源
    《AIAA Journal》 |2013年第5期|1234-1244|共11页
  • 作者单位

    University of Birmingham, Birmingham, England B15 2TT, United Kingdom;

    University of Birmingham, Birmingham, England B15 2TT, 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
  • 中图分类
  • 关键词

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