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| 圆柱体低速入水空泡试验研究 |
| 何春涛, 王聪, 何乾坤, 仇洋 |
| 哈尔滨工业大学 航天学院, 哈尔滨 150001 |
| Low speed water-entry of cylindrical projectile |
| He Chun-Tao, Wang Cong, He Qian-Kun, Qiu Yang |
| School of Astronautics, Harbin Institute of Technology, Harbin 150001, China |
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摘要： 针对入水空泡生成机理和发展过程, 以及影响入水空泡发展的复杂因素等开展入水试验研究. 通过垂直和倾斜两种方式入水试验研究, 分析了入水过程中的一系列流动现象, 以及空泡的生成、 发展和闭合, 同时通过对比试验结果得出了空泡闭合方式与入水速度之间的关系; 在此基础之上开展了多弹体入水试验, 分析了串列和并列入水时空泡的生成和相互之间的影响, 以及对运动体本身稳定性的影响.
关键词：
圆柱体入水
入水空泡
空泡闭合
试验研究
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Abstract： Experimental studies of the water-entry of cylinder bodies are conducted using high-speed camera to capture the splashes over the water surface and the subsurface cavity shapes during water entry and the cavity-running phase. Cavity evolution is discussed on single 140° conical cylinder body such as formation, development, and pinch-off of vertical and oblique entry. The dependence of the pinch-off type on the entry velocity is discussed for various entry speeds. The phenomena of two-body water entry in series and side-by-side are discussed in the end of this paper, and the data show that the spatial distance between the two bodies has a great influence on the development and the stability of the cavity and the dynamics of both bodies themselves.
Keywords：
cylinder body water-entry
water-entry cavity
cavity pinch-off
experimental investigation
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收稿日期: 2011-10-20
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| 基金: 总装备部资助项目(批准号: 623010203)资助的课题. |
References
| [1] | May A 1975 AD-A020 429
|
| [2] | Worthington A M, Cole R S 1897 Phil. Trans. Roy. Soc. 189 A 137
|
| [3] | Worthington A M, Cole R S 1900 Phil. Trans. Roy. Soc. 194 A 175
|
| [4] | Worthington A M, Cole R S 1908 A study of splashes (London, New York, Bombay, Calcutta: Longmans, Green, and Co.) p78
|
| [5] | Waugh J G 1968 J. Hydrodynamics 2 87
|
| [6] | Birkhoff G, Caywood T E 1949 Appl. Phys. 20 646
|
| [7] | Birkhoff G, Isaacs R 1951 Navord Rep. Tech. Rep. 1490
|
| [8] | Birkhoff G, Zarantonello E H 1957 Jet, Wakes, and Cavities (New York: Academic Press Inc.) p6
|
| [9] | Glibarg D, Anderson R A 1948 J. Appl. Phys. 19 127
|
| [10] | May A 1970 J. Hydrodynamics 4(4) 140
|
| [11] | May A, Woodhull J C 1948 J. Appl. Phys. 19 1109
|
| [12] | May A 1951 J. Appl. Phys. 22 1219
|
| [13] | May A, Woodhull J C 1948 J. Appl. Phys. 19 1109
|
| [14] | Glasheen J W, Macmahon T A 1996 Nature 380 340
|
| [15] | Glasheen J W, Macmahon T A 1996 Phys. Fluids 8 2078
|
| [16] | Glasheen J W, Peters Ivo R, Manuel Gordillo J, Devaraj van der Meer, Detlef Lohse 2010 Phys. Fluids 2 1
|
| [17] | Aristoff J M, Bush J W M 2009 J. Fluid Mech. 619 45
|
| [18] | Cyril Duez, Christophe Ybert, Christophe Clanet, Lyderic Bocquet 2007 Nature Physics 3 180
|
| [19] | Waugh G 1975 Naval Undersea Center, California: AD-A007 529
|
| [20] | Logvinovich G V (Translated by D. Lederman) 1972 Hydrodynamics of Free-boundary Flows (Jersualem: IPST Press) pp104-118
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何春涛, 王聪, 何乾坤, 仇洋. 圆柱体低速入水空泡试验研究[J]. 物理学报, 2012, 61(13): 134701.
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2012, Vol. 61 
