宇航学报

宇航学报 ›› 2012, Vol. 33 ›› Issue (8): 1006-1012.doi: 10.3873/j.issn.1000-1328.2012.08.002

• 飞行器设计与力学 • 上一篇    下一篇

局部多孔壁－内腔结构的气动加热瞬态特性

沈淳1, 孙凤贤2, 夏新林1, 曹占伟3, 于明星3, 王振峰3   

  1. 1. 哈尔滨工业大学能源科学与工程学院，哈尔滨 150001；2. 哈尔滨工程大学动力与能源工程学院，哈尔滨 150001;
    3. 北京临近空间飞行器系统工程研究所，北京 100076
  • 收稿日期:2012-01-11 修回日期:2012-05-17 出版日期:2012-08-15 发布日期:2012-08-22
  • 作者简介:10001328（2012）08100607
  • 基金资助:
    国家自然科学基金（51176038）

Transient Characteristics of Aerodynamically Heating Partial  Porous Wall Inner Cavity

SHEN Chun1, SUN Feng xian2, XIA Xin Lin1, CAO Zhan wei3, YU Ming xing3, WANG Zhen feng3   

  1. 1. School of Energy Science and Engineering, Harbin 150001, China；

    2. School of Power and Energy Science, Harbin Engineering University, Harbin 150001, China;

    3.Beijing Institute of Nearspace Vehicle’s System Engineering, Beijing 100076, China

  • Received:2012-01-11 Revised:2012-05-17 Online:2012-08-15 Published:2012-08-22

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摘要： 根据超声速飞行器外表面连接结构处密封结构几何特征，以局部多孔壁和内腔结构为研究对象，建立流/固/多孔区域流动和传热过程耦合计算模型，其中多孔区域中运用分布阻力法，流、固区域间换热过程采用准稳态耦合计算方法。经过与相关实验数据进行对比，验证了程序可靠性，并进一步分析在整个长时间瞬态过程中，该密封结构的流动和传热特征，阐明了在瞬态过程中多孔材料等效热流对缝隙壁面的加热作用。研究了有、无多孔材料填充两种情况下缝隙壁面热流分布形态的差异，探讨了缝隙中填充多孔材料对高速流场边界层热气流侵入内腔过程的影响。

关键词: 超声速, 密封结构, 多孔区域, 分布阻力法, 瞬态特性

Abstract:

According to the geometric characteristics of seal structure in the joint location of the supersonic vehicle surface, taking the partial porous wall and the cavity as the research object, the fluid flow/heat transfer coupled computational model in fluid/solid/porous areas is established. The distributed resistance method is utilized in the porous media and the quasi steady coupled method is utilized in the heat transfer process between fluid and solid areas. The compilling program is testified to be feasible by comparing its results with the correlated experimental data. Then, flow and heat transfer characteristics in the seal structure are analyzed during a longer transient process. In the transient process, the heating effect of the equivalent heat flux of the porous material on the slot wall are illustrated. The distributing differences with and without porous material stuffed are studied. The effects of the porous material on the process that the boundary thermal flow in the high speed flow field invades into the inner cavity are investigated.



Key words: Supersonic, Seal structure, Porous area, Distributed resistance method, Transient characteristics

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