Numerical Simulation of Shock Wave Diffraction over a Crack by Using Dynamic Boundary Conditions

LUO  Lei; SUN  Zhensheng; ZHANG  Shiying

doi:10.15892/j.cnki.djzdxb.2015.01.032

Journal of Projectiles, Rockets, Missiles and Guidance >

2015 , Vol. 35 >Issue 1: 127 - 130

DOI: https://doi.org/10.15892/j.cnki.djzdxb.2015.01.032

CORRELATION TECHNOLOGY

Numerical Simulation of Shock Wave Diffraction over a Crack by Using Dynamic Boundary Conditions

LUO Lei ,
SUN Zhensheng ,
ZHANG Shiying

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The Second Artillery Engineering University, Xi'an 710025, China

Received date: 2014-02-24

Online published: 2025-05-26

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Abstract

Numerical simulations of moving shock wave diffraction over a propellant crack during rocket ignition carried out by using the weighted essentially non-oscillatory (WENO) scheme combing with the Level Set method. Considering the difficulties of the dynamic meshes in dealing with topology change of the complicated surface, the Level Set method employed to track the evolving surface of the grain crack to couple the moving boundaries of the crack with ignition pressurization. A set of changing flow field obtained, in which the evolution process of the shock waves can be clearly observed. The mechanism of shock wave diffraction over a crack analyzed. The necessity of the dynamic boundary conditionss discussed by comparing the difference between the results obtained from static and dynamic boundary conditions.

Key words： shock wave; crack; level set method; numerical simulation

Cite this article

LUO Lei , SUN Zhensheng , ZHANG Shiying . Numerical Simulation of Shock Wave Diffraction over a Crack by Using Dynamic Boundary Conditions[J]. Journal of Projectiles, Rockets, Missiles and Guidance, 2015 , 35(1) : 127 -130 . DOI: 10.15892/j.cnki.djzdxb.2015.01.032

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