航行体水下垂直发射空泡脱落条件研究
INVESTIGATION OF CAVITIES SHEDDING CONDITION ON UNDERWATER VEHICLES IN THE VERTICAL LAUNCH PROCESS
查看参考文献17篇
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文摘
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航行体水下垂直发射出水时空泡的脱落能够影响溃灭的压力以至结构的设计载荷,因此研究发射条件对空泡脱落和空泡状态的影响具有重要的意义。该文首先从回转体空泡脱落的特征出发,确认回射流是导致空泡脱落的控制因素,进而通过对空泡脱落的影响分析,提出回射流运动时间和航行体运动时间的比值大小能够作为空泡脱落和空泡状态的判据;接着对不同深度发射工况流场与空泡演化过程开展了系统数值模拟并与典型试验结果对比分析,验证并给出了该判据其在典型发射工况下的量化表达式;进而讨论了空化数、弗劳德数、深度、发射速度、泡内压力等条件对空泡断裂脱落的影响,给出了出水空泡溃灭时产生较强随机性高压力脉冲的发射区间。 |
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其他语种文摘
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Shedding phenomena of cavitation bubbles can change the characteristics of collapse pressure. Thusly, it is very important for structural design to investigate the influence of launch conditions on the shedding and evolution of cavitation bubbles. Firstly, the re-entry jet was affirmed as the control factor through the analysis of bubbles shedding. A dimensionless number S_(ul) was conducted as the ratio of periods of the re-entry jet motion and the vehicle motion. S_(ul) can describe the condition of bubbles at the moment when the vehicle is running through the free surface. Moreover, a series of numerical simulations were carried out to obtain the evolutions of flow fields and cavities in typical launch processes with different depth. CFD results verified theoretical results and calculated the parameters in the formula of S_(ul) by nonlinear fitting. Finally, the influence of important factors on shedding of cavities was discussed, such as cavitation number, Froude number, launch speed, and depth. |
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来源
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工程力学
,2015,32(11):33-39 【核心库】
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DOI
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10.6052/j.issn.1000-4750.2014.04.0331
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关键词
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水下发射
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空泡脱落
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数值模拟
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脱落条件
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发射条件优化
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地址
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1.
中国科学院力学研究所, 中国科学院流固耦合系统力学重点实验室, 北京, 100190
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中国科学院力学研究所, 非线性力学国家重点实验室, 北京, 100190
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-4750 |
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学科
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力学 |
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基金
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国家自然科学基金项目
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中国科学院青年创新促进会项目
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文献收藏号
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CSCD:5562186
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参考文献 共
17
共1页
|
|
1.
Knapp R T.
Cavitation,1970
|
被引
63
次
|
|
|
|
|
2.
Kubota A. Unsteady structure measurement of cloud cavitation on a foil section using conditional sampling technique.
Journal of Fluid Engineering,1989,111(2):204-210
|
被引
60
次
|
|
|
|
|
3.
Le Q. Partial cavities:Pressure pulse distribution around cavity closure.
Journal of Fluid Engineering,1993,115(2):249-254
|
被引
9
次
|
|
|
|
|
4.
Stutz B. Experiments on unsteady cavitation.
Experiments in Fluids,1997,22(3):191-198
|
被引
13
次
|
|
|
|
|
5.
Callenaere M. The cavitation instability induced by the development of a re-entrant jet.
Journal of Fluid Mechanics,2001,444:223-256
|
被引
42
次
|
|
|
|
|
6.
黄彪. 绕平头回转体非定常空化流体动力特性研究.
试验流体力学,2011,25(2):22-28
|
被引
1
次
|
|
|
|
|
7.
季斌. 绕扭曲翼型三维非定常空泡脱落结构的数值分析.
水动力学研究与进展(A辑),2010,25(2):217-223
|
被引
10
次
|
|
|
|
|
8.
陈瑛. 绕水翼局部空泡的非定常流动特性.
中国科技论文在线,2006
|
被引
1
次
|
|
|
|
|
9.
权晓波. 航行体出水过程空泡溃灭特性研究.
船舶力学,2008,12(4):545-549
|
被引
20
次
|
|
|
|
|
10.
胡影影. 半无限长柱体出水数值模拟.
清华大学学报(自然科学版),2002,42(2):235-238
|
被引
10
次
|
|
|
|
|
11.
傅慧萍. 回转体空泡流特性研究.
水动力学研究与进展(A辑),2005,20(1):84-98
|
被引
18
次
|
|
|
|
|
12.
闵景新. 潜射导弹垂直发射过程流体动力特性数值模拟.
兵工学报,2010,30(10):1303-1309
|
被引
16
次
|
|
|
|
|
13.
王一伟. 航行体垂直出水载荷与空泡溃灭机理分析.
力学学报,2012,44(1):39-48
|
被引
32
次
|
|
|
|
|
14.
Yanpeng Wei. A Scaled Underwater Launch System Accomplished by Stress Wave Propagation Technique.
Chinese Physics Letters,2011,28(2):024601
|
被引
11
次
|
|
|
|
|
15.
王一伟. 水下回转航行体的云状空化回射流运动特征研究.
水动力学研究与进展(A辑),2013,28(1):23-29
|
被引
11
次
|
|
|
|
|
16.
Kim J H.
Water tunnel simulation study of the later stages of water entry of conical head bodies, Technical Memorandum,1975
|
被引
1
次
|
|
|
|
|
17.
Gsinghal A K. Mathematical basis and validation of the full cavitation model.
Journal of Fluids Engineering,2002,124(3):617-624
|
被引
1
次
|
|
|
|
|
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