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弹箭与制导学报 >

2012 , Vol. 32 >Issue 1: 136 - 138

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2012.01.022

火箭技术

宽高比对超燃冲压发动机尾喷管的性能影响研究

  • 文科 ,
  • 李旭昌 ,
  • 马岑睿 ,
  • 马海英 ,
  • 宋亚飞
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  • 空军工程大学导弹学院,陕西三原 713800

文科(1987-),男,陕西周至人,硕士,研究方向:发动机内流场仿真与计算。

收稿日期: 2011-04-18

  网络出版日期: 2025-05-29

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The Research on Effect of Aspect Ratio on Scramjet Nozzle

  • WEN Ke ,
  • LI Xuchang ,
  • MA Cenrui ,
  • MA Haiying ,
  • SONG Yafei
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  • The Missile Institute, Air Force Engineering University, Shaanxi Sanyuan 713800, China

Received date: 2011-04-18

  Online published: 2025-05-29

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摘要

三维后体尾喷管是超燃冲压发动机产生推力的关键部件。文中在优化设计后的二维后体尾喷管基础上,采用计算流体力学软件Fluent,对不同宽高比的三维尾喷管内流场进行了数值模拟,研究了宽高比对超燃冲压发动机尾喷管性能的影响。结果表明:随着宽高比的增大,尾喷管的轴向推力系数、推力矢量角都有比较明显的增大,综合考虑,建议设计喷管时选择宽高比H≤5.

关键词： 超燃冲压发动机; 后体尾喷管; 宽高比; 数值模拟

本文引用格式

文科 , 李旭昌 , 马岑睿 , 马海英 , 宋亚飞 . 宽高比对超燃冲压发动机尾喷管的性能影响研究[J]. 弹箭与制导学报, 2012 , 32(1) : 136 -138 . DOI: 10.15892/j.cnki.djzdxb.2012.01.022

Abstract

The 3D after-body nozzle is a key component of scramjet for generating thrust. Based on 2D optimum after-body nozzle optimization method, the flow field numerical simulations were conducted on 3D after-body nozzle with variety of aspect ratio using Fluent code to research the effect of aspect ratio on scramjet nozzle. The results show that the axial thrust coefficient and the thrust-vector angle have been enhanced with the increase of aspect ratio. According to comprehensive consideration, it is suggested that H ≤ 5 be chosen fort the 3D after-body nozzle.

Key words： scramjet engine; after-body nozzle; aspect ratio; numerical simulation

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