计算物理 ›› 2000, Vol. 17 ›› Issue (5): 532-536.

• 论文 • 上一篇    下一篇

弹体级间分离流场特性的数值模拟研究

周伟江, 白鹏, 马汉东   

  1. 北京空气动力研究所, 北京 100074
  • 收稿日期:1999-08-17 修回日期:1999-10-12 出版日期:2000-09-25 发布日期:2000-09-25
  • 作者简介:周伟江(1962~),男,浙江宁波,研究员,主要从事飞行器流场数值模拟和非定常流/涡运动特性的研究,北京7201信箱16分箱100074.

THE NUMERICAL STUDY OF FLOWFIELDS AROUND A SEPARATING MISSILE

ZHOU Wei-jiang, BAI Peng, MA Han-dong   

  1. Beijing Institue of Aerodynamics, Beijing 100074, P R China
  • Received:1999-08-17 Revised:1999-10-12 Online:2000-09-25 Published:2000-09-25

摘要: 用数值方法模拟了超声速弹体级间分离流场,给出了不同级间距离时几种典型的流场结构,两类典型的流态与实验观察一致。级间距离较小时,级间区为死水区,前体阻力为负,出现典型的"后体效应"现象;距离较大时,内外流之间出现很复杂的干扰波系,一定的分离距离后,后体前缘分离流动区前出现正激波,后体的干扰基本被隔绝。

关键词: 级间分离, 分离流动, 数值模拟

Abstract: The flowfields around a separating missile in supersonic free stream are studied numerically. Several typical flowfield structures in various separation distances are obtained. Two typical flow patterns are consistent very well with that observed in experiment. When the separation distance is small, the region between two stages is filled with "dead water" flow, the bottom drag of forebody is negative, the typical "afterbody effect" phenomenon occurs. When the separation distance is large, the complex interactive waves system is observed. After centain separation distance, the normal shock wave is formed in the front of the separated flow region before afterbody, hence the afterbody effect to forebody has been cut off.

Key words: separation between two stages, separated flow, numerical simulation

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