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Journal of Projectiles, Rockets, Missiles and Guidance >

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

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

ROCKETS TECHNOLOGY

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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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

Cite this article

XU Tuanwei , TIAN Weiping , WANG Jianru . The Effect of Structure Characteristics on Pressure Oscillation in Combustion Chamber[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2013 , 33(1) : 117 -120 . DOI: 10.15892/j.cnki.djzdxb.2013.01.016

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