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非球形水下爆炸气泡坍塌机制

DOI: 10.11858/gywlxb.2012.05.004, PP. 501-507

Keywords: 非球形气泡,气泡坍塌,射流,水下爆炸

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Abstract:

为研究非球形水下爆炸气泡的坍塌机制和射流特性,采用水下爆炸实验和数值模拟相结合的手段,研究了典型的柱形装药自由场水下爆炸气泡的运动过程。实验结果与数值模拟结果符合较好,通过对比发现,非球形水下爆炸气泡坍塌所形成的射流与球形气泡坍塌射流的行为存在差异。研究结果表明:非球形气泡的坍塌过程与气泡初始形态的局部曲率半径有关,初始气泡表面曲率半径大的区域的初始膨胀速度较曲率半径小的区域的小,坍塌时刻也较早,导致气泡产生非球形坍塌。

References

[1]  Lohse D, Schmitz B, Versluis M. Snapping shrimp make flashing bubbles [J]. Nature, 2001, 413: 477-478.
[2]  Benjamin T B, Ellis A T. The collapse of cavitation bubbles and the pressures thereby produced against solid boundaries [J]. Proc R Soc Lond A, 1966, 59: 221-240.
[3]  Blake J R, Taib B B, Doherty G. Transient cavities near boundaries: Part 1 Rigid boundary [J]. J Fluid Mech, 1987, 170: 479-497.
[4]  Menon S. Experimental and numerical studies of underwater explosions, ADA317378 [R]. Atlanta, Georgia: Office of Naval Research, 1996.
[5]  Katz J I. Jets from collapsing bubbles [J]. Proc R Soc Lond A, 1999, 455: 323-328.
[6]  Lauterborn W. Cavitation bubble dynamics-New tools for an intricate problem [J]. Appl Sci Res, 1982, 38: 165-178.
[7]  Blake J R, Gibson D C. Cavitation bubbles near boundaries [J]. A Rev Fluid Mech, 1987, 19: 99-123.
[8]  Wilkerson S A. A boundary integral approach to three dimensional underwater explosion bubble dynamics [D]. Baltimore: Johns Hopkins University, 1990.
[9]  Huang C, Zhu F, Wang B, et al. Numerical simulation for dynamic behavior of non-spherical underwater explosion bubble [J]. Acta Armamentarii, 2011, 32(Suppl 2): 51-56. (in Chinese)
[10]  黄超, 朱枫, 汪斌, 等. 非球形水下爆炸气泡动态特性的数值模拟 [J]. 兵工学报, 2011, 32(增2): 51-56.
[11]  Geers T L, Hunter K S. An integrated wave-effects model for an underwater explosion bubble [J]. J Acoust Soc Am, 2002, 111(4): 1584-1601.
[12]  Huang C, Wang B, Liu C L, et al. On the shape evolution of underwater explosion bubbles by cylindrical charges [J]. Chinese Journal of High Pressure Physics, 2011, 25(3): 236-241. (in Chinese)
[13]  黄超, 汪斌, 刘仓理, 等. 柱形装药水中爆炸气泡的形态演变 [J]. 高压物理学报, 2011, 25(3): 236-241.
[14]  Sternberg D. Underwater detonation of pentolite cylinders [J]. Phys Fluids, 1987, 30(3): 761-769.

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