计算物理 ›› 2006, Vol. 23 ›› Issue (2): 204-208.

• 研究论文 • 上一篇    下一篇

光在超声速湍流边界层中的传输

陈勇1, 柳建2, 李树民1, 金钢1,2   

  1. 1. 中国空气动力研究与发展中心, 四川 绵阳 621000;
    2. 中国科学院光电技术研究所, 四川 成都 610209
  • 收稿日期:2004-11-15 修回日期:2005-05-20 出版日期:2006-03-25 发布日期:2006-03-25
  • 作者简介:陈勇(1975-),四川资中,博士生,主要从事湍流模式理论、湍流计算及气动光学效应等研究.
  • 基金资助:
    国防科技预研基金资助项目

Propagation of Light in a Supersonic Turbulence Boundary Layer

CHEN Yong1, LIU Jian2, LI Shu-min1, JIN Gang1,2   

  1. 1. China Aerodynamics Research and Development Center, Mianyang 621000, China;
    2. Institute of Optics and Electronics, Chinese Academy of Science, Chengdu 610209, China
  • Received:2004-11-15 Revised:2005-05-20 Online:2006-03-25 Published:2006-03-25

摘要: 采用数值方法分析超声速边界层流场对光传输的影响,并根据光波的变化对流场特征进行分析.用法福尔质量加权平均N-S方程及两方程湍流模型求解三维超声速平板湍流边界层流动;光在流场中的传输采用傍轴近似光波传输方程描述,用相屏法和快速傅里叶变换(FFT)技术求解.利用穿越流场的光波光强和相位的改变,直观分析光波畸变和流场的部分特征信息.

关键词: 超声速流, 边界层, 相屏法, 光波畸变

Abstract: Propagation of light in a supersonic flat turbulence boundary layer is numerically analyzed. The flow characteristics are studied according to the optic wave-front variance. The mass-weight averaging N-S equations are adopted as the governing equations of flow, and a two-equation turbulent model is employed. Light propagation is described by paraxial wave equations and solved by a phase-screen method combined with the FFT technique, Light intensity distribution and phase aberrations are given in order to show the optic aberrations as well as the flow characteristics.

Key words: supersonic flow, boundary layers, phase-screen method, optic aberrations

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