Full
Outline
Dust detonation of of RDX particles suspended in air was numerically studied with two-phase flow model. Behind the leading shock front of detonation, RDX particles were accelerated and heated by the gas flow. Melt of RDX occurred on the surface of particles. It was assumed that melted part of particle was stripped by the gas flow and decompostion reaction happened instantaneously, during the energy is released to support the propagation of detonation wave. Development and propagation of dust detonation with different particle sizes and different concentration was numerically simulated and the parameters of detonation were obtained. Distribution of pressure, temperature, velocity behind leading shock front was calculated. Parameters of dust detonation were determined. When the concntration of RDX dust is low, pulsating mode of peak pressure history of detonation front occured. Numerical simulation results showed that when the concentration of RDX dust was between 80 g/m3 and 150 g/m3, history of peak pressure of detonation wave front was regular pulsating. When the concentration was 70 g/m3, the pulsating was irregular.
25
5
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
