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弹箭与制导学报 >

2013 , Vol. 33 >Issue 1: 117 - 120

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2013.01.016

火箭技术

结构特性对燃烧室压强振荡的影响研究

  • 许团委 ,
  • 田维平 ,
  • 王建儒
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  • 1 西北工业大学航天学院,西安 710072
    2 中国航天科技集团公司第四研究院第41所,西安 710025

许团委(1985-),男,陕西乾县人,博士研究生,研究方向:固体火箭发动机总体设计。

收稿日期: 2012-05-22

  网络出版日期: 2025-05-24

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The Effect of Structure Characteristics on Pressure Oscillation in Combustion Chamber

  • XU Tuanwei ,
  • TIAN Weiping ,
  • WANG Jianru
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  • 1 School of Astronautics, Northwestern Polytechnical University, Xi' an 710072, China
    2 The 41st Institute of the Fourth Academy, CSAC, Xi' an 710025, China

Received date: 2012-05-22

  Online published: 2025-05-24

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摘要

为了揭示结构特性对固体发动机燃烧室压强振荡的影响规律,采用大涡模拟方法以“绝热环”及“潜入式喷管空腔背壁区”为重要结构设计参数,完成了4种不同结构设计条件下的典型VKI发动机流场稳定性数值模拟。最终获得了各工况下的压强-时间曲线及其FFT结果。分析表明:绝热环是引起旋涡脱落的主要因素,背壁区维持并加强了声涡耦合引起的声能增益,对压强振幅有较大的影响。

关键词： 固体火箭发动机; 压强振荡; 大涡模拟方法; 绝热环; 背壁区

本文引用格式

许团委 , 田维平 , 王建儒 . 结构特性对燃烧室压强振荡的影响研究[J]. 弹箭与制导学报, 2013 , 33(1) : 117 -120 . DOI: 10.15892/j.cnki.djzdxb.2013.01.016

Abstract

In order to discover the mechanism between structure characteristics and pressure oscillation in solid rocket motor (SRM), inhibitor ring and back wall region of submerged nozzle were taken as key parameters. large eddy simulation (LES) was carried on for four different model based typical Von Karman institute(VKI) for fluid dynamics motor. Finally, pressure evolution and its fast Fourier transform (FFT) results were gained. It indicates that the inhibitor ring is the main factor of vortex shedding. Back wall region, which determines the pressure oscillation amplitude, maintains and strengthens the acoustics energy gain caused by acoustic vortex coupling.

Key words： solid rocket motor; pressure oscillation; large eddy simulation; inhibitor ring; back wall region

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参考文献

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