FAE装置参数对燃料抛撒与爆炸威力影响的实验研究

惠君明; 张陶; 郭学永

doi:10.11858/gywlxb.2004.02.002

FAE装置参数对燃料抛撒与爆炸威力影响的实验研究

doi: 10.11858/gywlxb.2004.02.002

南京理工大学化工学院，江苏南京 210094

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通讯作者:
惠君明

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出版历程
- 收稿日期: 2003-07-07
- 修回日期: 2003-09-30
- 发布日期: 2004-06-05

Experimental Study on the Influence of Device Parameters of FAE to Fuel Dispersion and Explosive Power

School of Chemical Engineering, NUST, Nanjing 210094, China

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Corresponding author: HUI Jun-Ming

摘要

摘要: 采用高速运动分析系统对FAE实验装置爆炸抛撒过程进行观测，描述了燃料抛撒过程的不同阶段，实验研究了比药量、长径比、壳体材质等装置参数对燃料抛撒与爆炸威力的影响。结果表明，燃料抛撒过程可分为射流形成与扩散运动阶段、燃料两向膨胀运动阶段和气液融合运动阶段。不同阶段对应不同的流体动力学特征，对云团形成的贡献不同。在实验装置总体优化条件下，适当增大比药量可提高云团覆盖面积与体积；在实验范围内长径比不是影响云团状态的显著因素，但长径比较大时可使燃料抛撒均匀性更好；采用钢质壳体时云雾抛撒状态明显优于铝质壳体。实验证明，采用碳钢壳体、比药量3%左右、长径比为3~5且装置参数良好匹配时，可获得理想的云团状态和高威力爆炸波毁伤效应。
- FAE /
- 装置参数 /
- 爆炸抛撒 /
- 长径比
Abstract: According to observation results of explosive dispersion process of FAE (fuel-air explosive) test device with fast kinematics analysis system, the different dispersion stages of fuel were characterized and the influence of specific central explosive, ratio of height to diameter and shell material to fuel dispersion was studied in this paper. The results show that dispersion process can be divided into the following three phases, jet formation and expansion movement phase, two-direction expansion movement phase and gas-liquid amalgamation movement phase. The different stages of fuel dispersion process correspond with different hydrodynamics characteristics and contribute to the formation of cloud in respective. Under the conditions of general optimization of test device, cloud area and volume were expanded by properly increasing specific central explosive. The ratio of height to diameter was not a remarkable factor influencing cloud status, but larger ratio of height to diameter dispersed fuel better. Cloud dispersion of steel shell was better than that of aluminum shell. It is concluded that ideal detonation status of cloud and high power effect can be attained when the steel shell, specific central explosive about 3% and ratio of height to diameter between 3 and 5 are adopted and are well-matched of three device parameters above.
- fuel-air explosive /
- device parameters /
- explosive dispersion /
- ratio of height to diameter

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参考文献(22)

Knittle E, Jeanloz R. Synthesis and Equation of State of (Mg, Fe)SiO3 Perovskite over 100 Gigapascals [J]. Science, 1987, 235: 668-670.

Kellogg L H, Hager B H, van der Hilst R D. Compositional Stratification in the Deep Mantle [J]. Science, 1999, 283: 1881-1884.

Shim S H, Duffy T S, Shen G. Stability and Structure of MgSiO3 to 2300-Kilometer Depth in Earth's Mantle [J]. Science, 2001, 293: 2437-2440.

Kesson S E, Fitz Gerald J D, Shelley J M. Mineralogy and Dynamics of a Pyrolite Lower Mantle [J]. Nature, 1998, 393: 252-255.

Meade C, Mao H K, Hu J. High-Temperature Phase Transition and Dissociation of (Mg, Fe)SiO3 Perovskite at Lower Mantle Pressures [J]. Science, 1995, 268: 1743-1745.

Saxena S K, Dubrovinsky L S, Lazor P, et al. Stability of Perovskite (MgSiO3) in the Earth's Mantle [J]. Science, 1996, 274: 1357-1359.

Huo H, Gong Z Z, Jing F Q. High-Pressure State of Enstatite and Its Implication in Geophysics [J]. Chinese Journal of High Pressure Physics, 1999, 12(2): 132-138. (in Chinese)

霍卉, 龚自正, 经福谦. 高压下顽火辉石的相态及其在地球物理中的应用 [J]. 高压物理学报, 1999, 12(2): 132-138.

Gong Z Z, Dai F, Zhang L, et al. Equation of State and Phase Stability of Mantle Perovskite up to 140 GPa Shock Pressure and Its Geophysical Implications [J]. Geophys Res Lett, 2004, 31: L04614, doi: 10. 1029/2003GL019132.

Duffy T S, Ahrens T J. Sound Velocities at High Pressure and Temperature and Their Geophysical Implications [J]. J Geophys Res, 1992, 97: 4503-4520.

Jing F Q. Introduction to Experiment Equation of State (2nd ed) [M]. Beijing: Science Press, 1999. 194, 356. (in Chinese)

经福谦. 实验物态方程导引 (第二版) [M]. 北京: 科学出版社, 1999. 194, 356.

Anderson O L, Masuda K, Isaak D G. Limits on the Value of T and for MgSiO3 Perovskite [J]. Phys Earth Planet Inter, 1996, 98: 31-46.

Liu L G. Silicate Perovskite Form Phases Transformation of Pyrobe-Garnet at High Pressures and Temperatures [J]. Geophys Res Lett, 1974, 1: 277-280.

Ito E, Matsui Y. Synthesis and Crystal-Chemical Characterization of MgSiO3 Perovskite [J]. Earth Planet Sci Lett, 1978, 38: 443-450.

McQueen R C, Marsh S P, Fritz J N. Hugoniot Equation of State of Twelve Rocks [J]. J Geophys Res, 1967, 72: 4999-5036.

Watt J R, Ahrens T J. Shock Wave Equation of State of Enstatite [J]. J Geophys Res, 1986, 91(B7): 7495-7503.

DeCarli P S, Milton D J. Stishovite: Synthesis by Shock Wave [J]. Science, 1965, 147: 144-145.

Chen J, Weidner D J, Vaughan T. The Srength of (Mg0. 9, Fe0. 1)SiO3 Perovskite at High Pressure and Temperature [J]. Nature, 2002, 419: 824-826.

Jackson I, Ahrens T. Shock Wave Compression of Single-Crystal Forsterite [J]. J Geophys Res, 1979, 84(B6): 3039-3048.

Fiquet G, Dewaele, Andrault D, et al. Thermoelastic Properties and Crystal Structure of MgSiO3 Perovskite at Lower Mantle Pressure and Temperature Conditions [J]. Geophys Res Lett, 2000, 27: 21-24.

Gong Z Z, Xie H S, Jing F Q, et al. High-Pressure Sound Velocity of Perovskite-Enstatite and Possible Composition of Earth's Lower Mantle [J]. Chinese Phys Lett, 1999, 19(9): 695-697.

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