|Table of Contents|

Numerical computation of shock wave in cartridge using second-generation wavelet(PDF)

《火箭推进》[ISSN:1672-9374/CN:CN 61-1436/V]

Issue:
2019年06期
Page:
53-59
Research Field:
研究与技术
Publishing date:

Info

Title:
Numerical computation of shock wave in cartridge using second-generation wavelet
Author(s):
LI Xiaoming1;  XU Zhiyu1; 2;  TAN Yonghua2; 3;  HU Pan1
(1.Xi’an Aerospace Propulsion Institute, Xi’an 710100, China; 2.Science and Technology on Liquid Rocket Engine Laboratory, Xi’an 710100, China; 3.Academy of Aerospace Propulsion Technology, Xi’an 710100, China)
Keywords:
cartridge;  shock wave;  numerical computation;  second-generation wavelet;  artificial viscosity;  similitude law
PACS:
V430
DOI:
-
Abstract:
In order to obtain the output pressure of cartridge and the propagation law of its shock wave, a one-dimensional flow model of the explosion gas was established, and the adaptive second-generation wavelet collocation method was applied in the numerical simulation.The propagation law of the shock wave along the one-dimensional equal section channel and the local variable section channel were analyzed. The results show that the adaptive wavelet collocation method combined with the artificial viscosity can precisely calculate the strong shock wave dashing out from the cartridge into the passage.The blast shock wave of the cartridge along the one-dimensional equal-section passage meets a certain similitude law, and the proposed similitude law formulas can estimate the propagation characteristics of the shock wave near the explosion field.The structural type and parameter of the passage have a significant effect on the propagation law.The similitude law expressions for the same type of cartridges and variable-section passage are proposed, and the estimated error is less than 10% under the condition of 1

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Last Update: 2019-12-20