Numerical Simulation of Detonation Wave Motion Based on Mie-Grüneisen Equation of State

doi:10.19596/j.cnki.1001-246x.8190

Abstract

Abstract: Based on C-J (Chapman-Jouguet) theory different reference states of gaseous detonation products and unreacted explosives in detonation problem are considered. According to these reference states, specific Mie-Grüneisen EOS (equation of states) is selected. As chemical reaction process is neglected, a zero-thickness section of guided shock wave exists as an interface in front of the detonation wave. In numerical simulation, evolution of detonation wave includes two parts:Propagation of wave section, as well as interaction with unreacted medium. In the propagation process, speed is defined as the constant detonation speed, and detonation products forms instantly. In the interaction process, Mie-Grüneisen mixture model is employed to simulate continuous impact of detonation wave. With Mie-Grüneisen EOS, as well as the Mie-Grüneisen mixture model, motion of detonation wave is simulated well. Comparing with related theoretical data and numerical results good performance was found.

Key words: detonation wave, C-J theory, Mie-Grüneisen equation, detonation speed

CLC Number:

O382

WU Zongduo, YAN Jin, ZONG Zhi, PANG Jianhua, GAO Yun. Numerical Simulation of Detonation Wave Motion Based on Mie-Grüneisen Equation of State[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2021, 38(1): 47-56.

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