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Date of Publication:2022-10-10

Journal:Chinese Journal of Computational Physics

Volume:38

Issue:1

Page Number:47-56

ISSN No.:1001-246X

Key Words:"detonation wave; C-J theory; Mie-Gruneisen equation; detonation speed"

CN No.:11-2011/O4

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-Gruneisen 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-Gruneisen mixture model is employed to simulate continuous impact of detonation wave.With Mie-Gruneisen EOS,as well as the Mie-Gruneisen mixture model,motion of detonation wave is simulated well.Comparing with related theoretical data and numerical results good performance was found.

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