Blasting, Volume. 42, Issue 3, 145(2025)
Microscopic Analysis of Relationship between Explosive Detonation Performance and Pore Distribution
This study introduces a straightforward two-dimensional vortex model to examine the release and absorption of vortex energy. The energy transfer resulting from vortex collapse during explosive detonation and the microscopic mechanisms underlying detonation growth are analyzed. The relationship between the macroscopic phenomena of detonation growth and extinction and microscopic factors, such as pore size distribution, is established through experimental validation. Findings suggest that the stability of the detonation process is microscopically governed by thermal flux and the effective number of vortices per unit volume within the field. The effects of particle size and density of the explosives on the macroscopic detonation behavior can be elucidated by considering the effective vortex volume concentration and distribution. Control of the ignition vortex pore size is essential, and stabilization of detonation can be achieved by adjusting pore sizes within defined minimum and maximum limits. An optimal and effective pore volume concentration is necessary to maximize the energy utilization efficiency of the explosives. Based on this research, successful tests on the regulation of detonation velocity of emulsion explosives through the use of mixture sensitizers with varied size distributions and constant densities were conducted.
Get Citation
Copy Citation Text
CAO Rong-ting, WANG Xiao-hong, LI Jia-xi, LI Xiao-jie, WANG Yu-xin, YAN Hong-hao, GENG Rui. Microscopic Analysis of Relationship between Explosive Detonation Performance and Pore Distribution[J]. Blasting, 2025, 42(3): 145
Category:
Received: Dec. 25, 2024
Accepted: Sep. 18, 2025
Published Online: Sep. 18, 2025
The Author Email: LI Xiao-jie (robinli@dlut.edu.cn)