中国物理B ›› 2019, Vol. 28 ›› Issue (7): 74203-074203.doi: 10.1088/1674-1056/28/7/074203

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Light propagation characteristics of turbulent plasma sheath surrounding the hypersonic aerocraft

Chunjing Lv(吕春静), Zhiwei Cui(崔志伟), Yiping Han(韩一平)   

  1. 1 School of Telecommunitions Engineering, Xidian University, Xi'an 710071, China;
    2 School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China
  • 收稿日期:2019-02-22 修回日期:2019-04-08 出版日期:2019-07-05 发布日期:2019-07-05
  • 通讯作者: Yiping Han E-mail:yphan@xidian.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant No. 61431010).

Light propagation characteristics of turbulent plasma sheath surrounding the hypersonic aerocraft

Chunjing Lv(吕春静)1, Zhiwei Cui(崔志伟)2, Yiping Han(韩一平)2   

  1. 1 School of Telecommunitions Engineering, Xidian University, Xi'an 710071, China;
    2 School of Physics and Optoelectronic Engineering, Xidian University, Xi'an 710071, China
  • Received:2019-02-22 Revised:2019-04-08 Online:2019-07-05 Published:2019-07-05
  • Contact: Yiping Han E-mail:yphan@xidian.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant No. 61431010).

摘要:

The characteristics of light propagation through turbulent plasma sheath surrounding the hypersonic aircraft have been studied. The turbulent flow fields around a hypersonic aircraft are given by using the Navier-Stokes (NS) equations and k-ε turbulence model. Based on the distribution of flow field, refractive index and density of the plasma sheath for a blunt cone are discussed with different flight velocities and altitudes. The refractive index is mainly influenced by the electrons in the turbulent plasma sheath. The influence of different velocities and altitudes on the features of light propagation in the turbulent plasma sheath is analyzed. The results show that as the flight speed increases or the flight altitude decreases, the refractive index fluctuation becomes larger. It is also found that the refractive index fluctuation varies with the incident wavelength. This study shows how the characteristics of an optical beam propagating through plasma sheath are affected by the incident wavelength, flight velocities, and altitudes.

关键词: optical transmission, plasma sheath

Abstract:

The characteristics of light propagation through turbulent plasma sheath surrounding the hypersonic aircraft have been studied. The turbulent flow fields around a hypersonic aircraft are given by using the Navier-Stokes (NS) equations and k-ε turbulence model. Based on the distribution of flow field, refractive index and density of the plasma sheath for a blunt cone are discussed with different flight velocities and altitudes. The refractive index is mainly influenced by the electrons in the turbulent plasma sheath. The influence of different velocities and altitudes on the features of light propagation in the turbulent plasma sheath is analyzed. The results show that as the flight speed increases or the flight altitude decreases, the refractive index fluctuation becomes larger. It is also found that the refractive index fluctuation varies with the incident wavelength. This study shows how the characteristics of an optical beam propagating through plasma sheath are affected by the incident wavelength, flight velocities, and altitudes.

Key words: optical transmission, plasma sheath

中图分类号:  (Wave propagation, transmission and absorption)

  • 42.25.Bs
52.40.Kh (Plasma sheaths)