压力波作用下二维椭圆形气泡界面演化规律研究
Interfacial evolution of a two-dimensional elliptical bubble induced by underwater pressure wave
查看参考文献17篇
|
文摘
|
水中压力波与气泡相互作用研究是解决空泡群溃灭问题的核心基础。射流是压力波作用下气泡非球形演化的最显著特征。本文通过数值模拟方法分析了水中压力波加载下二维椭圆形气泡的界面演化规律。结果表明,射流的生成位置与气泡倾角无关,方向与其密切相关。当气泡倾角等于0°,在气泡长轴两端生成两个方向相反的射流,最终与压力波传播方向相同的射流占主导。当气泡倾角等于90°,在气泡长轴两端生成两个对称射流,其与压力波传播方向夹角为53.9°。通过定量分析涡量方程式中各项的作用,揭示界面处压力梯度和密度梯度不共线导致的斜压机制是射流形成的主要原因。最后,通过改变椭圆形气泡倾斜角度,获得了气泡倾角与射流角度的关系。 |
|
其他语种文摘
|
The interaction between underwater pressure wave and bubble is the key to solve the problem of the collapse of bubble cloud.Jet generation is the most significant feature of nonspherical collapse induced by pressure wave.In the present study,we analyze numerically the interfacical evolution of 2Delliptical bubble induced by underwater pressure wave.The results of numerical simulation show that inclinination angle of bubble is dependent on jet direaction,and not on its generation position.Here the inclinination angle is defined as the angle between long axis of elliptical bubble and propagation direction of pressure wave.For inclination angle=0°, two jets with opposite directions are generated in long axis,and finally the jet pointing towards the propagation of pressure wave plays a dominant role.For inclination angle = 90°,two genenrated jets are symmetrical in the short axis,and the angle between them and the direction of pressure wave is 53.9°.By analyzing the equation of voricity,it is revealed that the baroclinity is the main mechanism of jet formation,which caused by the mismatch between pressure gradient and density incoherence at the interface.By changing the angle of elliptical bubble,we obtain the phase diagram between inclination angle and jet angle. |
|
来源
|
空气动力学学报
,2020,38(4):820-827 【核心库】
|
|
DOI
|
10.7638/kqdlxxb-2020.0069
|
|
关键词
|
水中压力波
;
二维椭圆形气泡
;
射流角度
;
斜压机制
;
R-M不稳定性
|
|
地址
|
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
2.
中国科学院大学工程科学学院, 北京, 100049
3.
北京宇航系统工程研究所, 北京, 100076
4.
中国科学院大学未来技术学院, 北京, 100049
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
0258-1825 |
|
学科
|
航空 |
|
基金
|
国家自然科学基金
;
中国科学院青年创新促进会优秀会员
|
|
文献收藏号
|
CSCD:6828965
|
参考文献 共
17
共1页
|
|
1.
Din G Z. The behavior of a gas cavity impacted by a weak or strong shock wave.
Journal of Fluid Mechanics,1996,309:183-209
|
被引
1
次
|
|
|
|
|
2.
Abe A. Observation and analysis of interaction phenomena between microbubbles and underwater shock wave.
Journal of Visualization,2015,18:437-447
|
被引
1
次
|
|
|
|
|
3.
Dear J P. Gas compression and jet formation in cavities collapsed by a shock wave.
Nature,1988,332(6164):505-508
|
被引
4
次
|
|
|
|
|
4.
Dear J P. A study of the collapse of arrays of cavities.
Journal of Fluid Mechanics,1988,190:409-425
|
被引
2
次
|
|
|
|
|
5.
Bourne N K. Shock-induced collapse of single cavities in liquids.
Journal of Fluid Mechanics,1992,244:225-240
|
被引
9
次
|
|
|
|
|
6.
Bourne N K. Shock-induced collapse and luminescence by cavities.
Philosophical Transactions Mathematical Physical & Engineering Sciences,1999,357:295-311
|
被引
2
次
|
|
|
|
|
7.
Apazidis A. Numerical investigation of shock induced bubble collapse in water.
Physics of Fluids,2016,28:046101
|
被引
3
次
|
|
|
|
|
8.
Wang Z. Scaling vortex breakdown mechansim based on viscous effect in shock cylindrical bubble interaction.
Physics of Fluids,2018,30:126103
|
被引
3
次
|
|
|
|
|
9.
Hawker N A. Interaction of a strong shock wave with a gas bubble in a liquid medium:a numerical study.
Journal of Fluid Mechanics,2012,701:59-97
|
被引
6
次
|
|
|
|
|
10.
Nourgaliev R R. Shock wave refraction patterns at interfaces.
International Journal of Multiphase Flow,2005,31:969-995
|
被引
3
次
|
|
|
|
|
11.
Johnsen E. Shock-induced collapse of a gas bubble in shockwave lithotripsy.
Journal of the Acoustical Society of America,2011,124(4):2011-2020
|
被引
12
次
|
|
|
|
|
12.
Goncalves E. Simulation of shock-induced bubble collapse using a four-equation model.
Shock Waves,2019,29:221-234
|
被引
2
次
|
|
|
|
|
13.
Ball G J. Shockinduced collapse of a cylindrical air cavity in water:a Free-Lagrange simulation.
Shock Waves,2010,10:265-276
|
被引
9
次
|
|
|
|
|
14.
李帅兵. 射流破碎的线性不稳定性分析方法.
空气动力学学报,2019,37(3):356-372
|
被引
5
次
|
|
|
|
|
15.
杨玟. 用湍流模型研究Richtmyer-Meshkov不稳定性诱导的湍流混合.
空气动力学学报,2010,28(1):119-123
|
被引
6
次
|
|
|
|
|
16.
Ranjan D. Shock-bubble interaction.
Annual Review of Fluid Mechanics,2011,43:117-140
|
被引
40
次
|
|
|
|
|
17.
张阿漫. 冲击波作用下气泡动态响应数值研究.
中国造船,2010,51(3):19-29
|
被引
4
次
|
|
|
|
|
了解气象卫星更多信息，请访问