Effect of ambient pressure on propagation characteristics and laws of air blast waves
Source abstract
Abstract
It is important to study the effect of ambient pressure on air blasts, and the explosion process of TNT explosives was calculated by using the AutoDyn-2D software in this paper. Moreover, the explosion parameters under different ambient pressure conditions were predicted, and the propagation characteristics and laws of the air blast waves were obtained. The results showed that the overpressure of the incident wave, reflected wave, and Mach wave was positively related to the ambient pressure. High ambient pressure resulted in a decrease in the barotropic time and velocity of the incident wave, but its impulse increased. The wavefront of the Mach wave propagated in a curved form, and the pressure distribution on the Mach stem was not uniform. The height of the triple points was inversely proportional to the increase in the ambient pressure, and this trend was significant with the increase in the distance.
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Research context
OpenAlex topics: Structural Response to Dynamic Loads · Combustion and Detonation Processes · Energetic Materials and Combustion
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
School of Resources and Environmental Engineering, Jiangxi University of Science and Technology 1 , Ganzhou 341000, China
Chongqing Hongyu Precision Industrial Group Co., Ltd. 2 , Chongqing 402760, China
References (20)
Show source-provided references
1. The dependence of blast on ambient pressure and temperature
2. Explosions and explosives in air
3. The effect of atmospheric pressure and temperature on air shock and appendix I and II
4. Measurements of air blast parameters above a reflecting surface
5. Explosion effects and properties: Part I. Explosion effects in air
6. Mechanical impulse measurements close to explosive charges
7. Blast wave parameters at diminished ambient pressure10.1016/j.actaastro.2014.12.007 ↗
8. Blastwave parameters assessment at different altitude using numerical simulation10.3906/muh-0911-39 ↗
9. The effect of ambient pressure on blast reflected impulse and overpressure10.1007/s40799-017-0171-8 ↗
10. Investigation of self-sustaining waves in metastable systems: Deflagration-to-detonation transition10.2514/1.33078 ↗
11. Analysis of air blast effect for explosives in a large scale detonation10.1007/s11814-017-0227-6 ↗
12. Numerical modeling of close-in detonations of high explosives10.1016/j.engstruct.2014.09.022 ↗
13. Review of Jones–Wilkins–Lee equation of state10.1051/epjconf/20101000021 ↗
14. X. T. Xie, “Numerical simulation and experimental research on propagation characteristics of blast shock wave at plateau environment,” M.S. thesis, Nanjing University of Science and Technology, Nanjing, 2017 (in Chinese).
15. 1979
16. 1979
17. 1952
18. Characterization of a gas burner to simulate a propellant flame and evaluate aluminum particle combustion10.1016/j.combustflame.2007.11.014 ↗
19. Blast wave from a spherical charge10.1063/1.1705911 ↗
20. Experimental study of the explosion of aluminized explosives in air10.22211/cejem/64967 ↗