气相爆轰波沿胞格的动力学机理研究

胡湘渝; 张德良

doi:10.11858/gywlxb.2001.03.007

气相爆轰波沿胞格的动力学机理研究

doi: 10.11858/gywlxb.2001.03.007

胡湘渝^1,2,,
张德良¹

1.
中国科学院力学研究所高温气体动力开放实验室，北京 100080；
2.
北京理工大学爆炸与安全科学国家重点实验室，北京 100081

详细信息

通讯作者:
胡湘渝

计量
- 文章访问数: 7983
- HTML全文浏览量: 434
- PDF下载量: 729
出版历程
- 收稿日期: 2000-12-21
- 修回日期: 2001-02-21
- 发布日期: 2001-09-05

Study on Dynamic Mechanism of Cellular Structure

HU Xiang-Yu^{1,2
,},
ZHANG De-Liang¹

1.
LHD, Institute of Mechanics, Chinese Academy of Science, Beijing 100080, China;
2.
National Laboratory of Explosion and Safety Science, Beijing Institute of Technology, Beijing 100081, China

More Information

Corresponding author: HU Xiang-Yu

摘要

摘要: 建立了一种以子单元分析为基础，研究气相爆轰波沿胞格运动时的动力学机理的新方法。根据该子单元的性质和斜冲击波关系，首先推导了对撞前后前导冲击波沿胞格对称轴的马赫数之比和入射冲击波入射角及胞格几何性质的关系，求解了胞格结构中的三波点对撞问题。然后，采用爆炸波模拟前导冲击波的自持运动过程，求解气相爆轰波沿胞格的动力学过程，理论分析表明，气相爆轰波在胞格起点首先经历一个增长过程，然后才出现衰减。理论分析结果与实验和数值计算结果的比较表明符合得较好。
- 爆轰波 /
- 数值模拟 /
- 基元化学反应 /
- 网格
Abstract: In this paper, the regular detonation cells were divided into the primary units, referred to as sub-cells of cellular detonation. By examining the dynamic process of detonation waves propagating along these sub-cells, theoretical analysis was conducted to study the dynamic mechanism of the two-dimensional idealized detonation waves in gaseous mixtures. Based on the theory of oblique shock waves, a analytical formula was derived to describe the relation between the Mach number ratio through triple-shock collision and the geometric properties of detonation cell. From this formula the incident angle can be also calculated. By applying a modified blast wave theory, and analytical model was developed to predict the dynamic process of detonation waves along the sub-cell. The results calculated from the analytical model show that detonation waves are, first, strengthened at the beginning of the sub-cell after triple-shock collisions, and then decay until the detonation waves reach the sub-cell end. These analytical results were compared with experimental data and previous numerical results, the agreement between them appears to be good, in general.
- gaseous detonation /
- detonation cell /
- cellular structure /
- dynamic mechanism

HTML全文

参考文献(22)

Strehlow R A. Gas Phase Detonations: Recent Developments [J]. Combustion and Flame, 1968, 12(2): 81-101.

Fickett W, Davis W C. Detonation [M]. Berkeley, CA: University of California Press, 1979.

Lee J H S. Dynamic Parameters of Gaseous Detonations [J]. Ann Rev Fluid Mech, 1984, 16: 311-336.

Nettleton M A. Gaseous Detonation [M]. London: Chapman and Hall, 1987.

Lundstrom E A, Oppenheim A E. On the Influence of Nondteadiness on the Thickness of the Detonation Waves [J]. Proc Roy Soc A, 1969, 310: 463-478.

Crooker A J. Phenomenological Investigation of Low Mode Marginal Planar Detonations [D]. University of Illinois, 1969.

Strehlow R A. Multi-Dimensional Detonation Wave Structure [J]. Astronautica Acta, 1970, 15: 345-357.

Strehlow R A, Crook A J. The Structure of Marginal Detonation Waves [J]. Acta Astonautica, 1974, 1: 303-315.

Voitsekhovsky B V, Mitrofanov V V, Topchian M E. Front Structure of Detonation in Gases [R]. AD-633821, 1963.

Thomas G O, Lefebvre M H, van Tiggelen P J. Preliminary Experimental Investigation of Pressure Evolution in Detonation Cells [J]. Experimental and Fluid Science, 2000, 21: 64-70.

Lee J H S. Dynamic Structure of Gas Detonation, Dynamic Structure of Detonation in Gaseous and Dispersed Media [M]. Netherland: Kluwer Academic Publishers, 1991: 1-25.

Mitrofanov V V. Modern View of Gas Detonation Mechanisms [J]. Progress in Astronautics and Aeronautics, 1996, 137: 324-340.

Strehlow R A. Detonation Structure and Gross Properties [J]. Combustion Science Technology, 1971, 4: 65-71.

Edward D H, Hopper G, Job E M, et al. The Behaviour of the Frontal and Transverse Shocks in Gaseous Detonation Waves [J]. Astronautica Acta, 1970, 15: 323-333.

Urtiew P A. Idealized Two-Dimensional Detonation Waves in Gaseous Mixtures [J]. Acta Astronautica, 1976, 3: 187-200.

Takai R, Yoneda K, Hikita T. Study of Detonation Wave Structure [A]. Fifteenth Symposium (International) on Combustion [C]. Pittsburgh: The Combustion Institute, 1974: 68-78.

Barthel H O. Reaction Zone-Shock Front Coupling in Detonations [J]. Physican of Fluids, 1972, 15(1): 43-50.

Oran E S, Weber J E, Stefaniw E I, et al. A Numerical Study of Two-Dimensional H2-O2-Ar Detonation Using a Detailed Chemical Reaction Model [J]. Combustion and Flames, 1998, 113: 147-163.

Gamezo V N, Desbordes D, Oran E S. Formation and Envolution of Two-Dimensional Cellular Detonations [J]. Combustion and Flames, 1999, 116: 154-165.

Strehlow R A, Admaczyk A A, Stiles R J. Transient Studies of Detonation Waves [J]. Astronautica Acta, 1972, 17: 509-527.

Oppenheim A E, Smolen J J, Kwak D, et al. On the Dynamics of Shock Intersections [A]. Fifth Symposium (International) on Detonation [C]. Arlington, VA: ONR, Department of Navy, 1972: 119-1136.

Steel G B. Experimental Study of the Wave Structure of Marginal Detonation in a Rectangular Tube [D]. Berkeley, CA: University of California, 1966.

施引文献

资源附件(0)

访问统计