中国物理B ›› 2012, Vol. 21 ›› Issue (8): 84401-084401.doi: 10.1088/1674-1056/21/8/084401

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

Numerical investigation on properties of attack angle for opposing jet thermal protection system

陆海波, 刘伟强   

  1. Science and Technology on Scramjet Laboratory, National University of Defense Technology, Changsha 410073, China
  • 收稿日期:2012-01-08 修回日期:2012-02-14 出版日期:2012-07-01 发布日期:2012-07-01
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 90916018), the Research Fund for the Doctoral Program of Higher Education of China (Grant No. 200899980006), and the Natural Science Foundation of Hunan Province, China (Grant No. 09JJ3109).

Numerical investigation on properties of attack angle for opposing jet thermal protection system

Lu Hai-Bo (陆海波), Liu Wei-Qiang (刘伟强 )   

  1. Science and Technology on Scramjet Laboratory, National University of Defense Technology, Changsha 410073, China
  • Received:2012-01-08 Revised:2012-02-14 Online:2012-07-01 Published:2012-07-01
  • Contact: Lu Hai-Bo E-mail:lhbboo@sohu.com
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 90916018), the Research Fund for the Doctoral Program of Higher Education of China (Grant No. 200899980006), and the Natural Science Foundation of Hunan Province, China (Grant No. 09JJ3109).

摘要: The three-dimensional Navier-Stokes equation and the k-ε viscous model are used to simulate the attack angle characteristics of a hemisphere nose-tip with an opposing jet thermal protection system in supersonic flow condition. The numerical method is validated by the relevant experiment. The flow field parameters, aerodynamic forces, and surface heat flux distributions for attack angles of 0°, 2°, 5°, 7°, and 10° are obtained. The detailed numerical results show that the cruise attack angle has a great influence on the flow field parameters, aerodynamic force, and surface heat flux distribution of the supersonic vehicle nose-tip with opposing jet thermal protection system. When the attack angle reaches 10°, the heat flux on the windward generatrix is close to the maximal heat flux on the wall surface of the nose-tip without thermal protection system, thus the thermal protection is failure.

关键词: properties of attack angle, opposing jet, thermal protection system, supersonic vehicle, computer simulation

Abstract: The three-dimensional Navier-Stokes equation and the k-ε viscous model are used to simulate the attack angle characteristics of a hemisphere nose-tip with an opposing jet thermal protection system in supersonic flow condition. The numerical method is validated by the relevant experiment. The flow field parameters, aerodynamic forces, and surface heat flux distributions for attack angles of 0°, 2°, 5°, 7°, and 10° are obtained. The detailed numerical results show that the cruise attack angle has a great influence on the flow field parameters, aerodynamic force, and surface heat flux distribution of the supersonic vehicle nose-tip with opposing jet thermal protection system. When the attack angle reaches 10°, the heat flux on the windward generatrix is close to the maximal heat flux on the wall surface of the nose-tip without thermal protection system, thus the thermal protection is failure.

Key words: properties of attack angle, opposing jet, thermal protection system, supersonic vehicle, computer simulation

中图分类号:  (Analytical and numerical techniques)

  • 44.05.+e
47.40.Ki (Supersonic and hypersonic flows)