超声场中气泡融合的影响因素分析
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摘要
采用高速摄影机对不同声压和频率作用下接触气泡的融合时间进行了实验研究,运用实验和数值计算相结合的方法分析了次Bjerknes力和最大径向振动速度对气泡融合时间的影响,结果表明在不同的超声声压和频率作用下,气泡的融合时间会随着次Bjerknes力和最大径向振动速度的增大而增大,对两个因素进行对比分析得到次Bjerknes力是影响气泡融合的关键因素。
The coalescence time between two contacting bubbles was measured experimentally in different acoustic pressures and frequencies using an imaging system with a high-speed video camera,and taken an analysis to the influence of secondary force and maximum oscillation velocity on the coalescence time of two contacting bubbles in this paper.It was found that under the action of different acoustic pressure and frequency,the coalescence time increase with secondary force and maximum oscillation velocity.Analyzed the influence of bubble coalescence time to compare secondary Bjerknes force and maximum oscillation velocity used the fitting formula shown that the secondary Bjerknes force are the critical factor to affect the bubble coalescence.
The coalescence time between two contacting bubbles was measured experimentally in different acoustic pressures and frequencies using an imaging system with a high-speed video camera,and taken an analysis to the influence of secondary force and maximum oscillation velocity on the coalescence time of two contacting bubbles in this paper.It was found that under the action of different acoustic pressure and frequency,the coalescence time increase with secondary force and maximum oscillation velocity.Analyzed the influence of bubble coalescence time to compare secondary Bjerknes force and maximum oscillation velocity used the fitting formula shown that the secondary Bjerknes force are the critical factor to affect the bubble coalescence.
引文
1 Mettin R,Akhatov I,Parlitz U,Ohl C D,Lautrborn W.Bjerknes forces between small cavitation bubbles in a strong acoustic field.Phys.Rev.E.,1997:56:2924—2931
2 Parlitz U,Mettin R,Luther R S,Akhatov I,Lauterborn W.Spatio-temporal dynamics of acoustic cavitation bubble clouds.Philos.Trans.R.Soc.A.,1999:357:313—334
3 Zabolotskaya E A.Phase conjugation of sound beams in connection with four-phonon interaction in a liquid containing gas bubbles.Sov.Phys.Acoust,1984:30:365—373
4 Bjerknes V.Fields of force.New York:The Columbia University Press,1906
5 Kornfeld M,Suvorov L.On the destructive action of cavitation.J.Appl.Phys.,1944:15:495—506
6 Blake F G.Bjerknes forces in stationary sound fields.J.Acoust.Soc.Am.,1949:21:551—553
7 Kapustina O A.Degassing of liquids.Ultrasonic Technology,1970:1:422—427
8 Eller A.Force on a bubble in a standing acoustic wave.J.Acoust.Soc.Am.,1968:43:170—176
9王成会,林书玉.超声场中气泡的耦合运动.声学学报,2011;36(3):325—331
10刘文强,沈壮志.声场中次Bjerknes力对微气泡分布的影响.声学技术,2011;31(4):424—427
11 Crum L A.Bjerknes forces on bubbles in a stationary sound field.J.Acoust.Soc.Am.,1975:57:1363—1366
12 Oguz H N,Prosperetti A.A generalization of the impulse and virial theorem with an application to bubble oscillations.J.Fluid Mech.,1990:218:143—162
13 Pelekasis N A,Tsamopoulos J A.Bjerknes forces between two bubbles.Part 2.Response to an oscillatory pressure field.J.Fluid Mech.,1993:254:501—527
14 WANG Chenghui.The coupled motions of bubbles in ulasonic field.Chinese Journal of Acoustics,2012:31(2):123—133
15 Duineveld P C.The influence of an applied sound field on bubble coalescence.J.Acoust.Soc.Am.,1996:99:622—624
16 Duineveld P C.Bouncing and coalescence of bubble pairs rising at high Reynolds number in pure water or aqueous surfactant solutions.Appl.Sci.Res.,1998:58:409—439
17 Postema M,Marmottant P,Lancee C T,Hilgenfeldt S,de Jong N.Ultrasound-induced microbubble coalescence.Ultrasound Med.Biol,2004:30(10):1337—1344
18 Postema M,van Wamel A,Lancee C T,de Jong N.Ultrasound-induced encapsulated microbubble phenomena.Ultrasound Med.Biol,2004:30(6):827—840
19 Jiao Junjie,He Yong,Leong T,Kentish S E,Ashokkumar M,Manasseh R,Lee J.Experimental and theoretical studies on the movements of two bubbles in an acoustic standing wave field.J.Phys.Chem.B.,2013:117(41):12549—12555
20 Jiao Junjie,He Yong,Kentish S E,Ashokkumar M,Manasseh R,Lee J.Experimental and theoretical analysis of secondary Bjerknes forces between two bubbles in a standing wave.Ultrasonics,2015:58:35—42
21 Jiao Junjie,He Yong,Yasui K,Kentish S E,Ashokkumar M,Manasseh R,Lee J.Influence of acoustic pressure and bubble sizes on the coalescence of two contacting bubbles in an acoustic field.Ultrasonics Sonochemistry,2015:22:70—77
2 Parlitz U,Mettin R,Luther R S,Akhatov I,Lauterborn W.Spatio-temporal dynamics of acoustic cavitation bubble clouds.Philos.Trans.R.Soc.A.,1999:357:313—334
3 Zabolotskaya E A.Phase conjugation of sound beams in connection with four-phonon interaction in a liquid containing gas bubbles.Sov.Phys.Acoust,1984:30:365—373
4 Bjerknes V.Fields of force.New York:The Columbia University Press,1906
5 Kornfeld M,Suvorov L.On the destructive action of cavitation.J.Appl.Phys.,1944:15:495—506
6 Blake F G.Bjerknes forces in stationary sound fields.J.Acoust.Soc.Am.,1949:21:551—553
7 Kapustina O A.Degassing of liquids.Ultrasonic Technology,1970:1:422—427
8 Eller A.Force on a bubble in a standing acoustic wave.J.Acoust.Soc.Am.,1968:43:170—176
9王成会,林书玉.超声场中气泡的耦合运动.声学学报,2011;36(3):325—331
10刘文强,沈壮志.声场中次Bjerknes力对微气泡分布的影响.声学技术,2011;31(4):424—427
11 Crum L A.Bjerknes forces on bubbles in a stationary sound field.J.Acoust.Soc.Am.,1975:57:1363—1366
12 Oguz H N,Prosperetti A.A generalization of the impulse and virial theorem with an application to bubble oscillations.J.Fluid Mech.,1990:218:143—162
13 Pelekasis N A,Tsamopoulos J A.Bjerknes forces between two bubbles.Part 2.Response to an oscillatory pressure field.J.Fluid Mech.,1993:254:501—527
14 WANG Chenghui.The coupled motions of bubbles in ulasonic field.Chinese Journal of Acoustics,2012:31(2):123—133
15 Duineveld P C.The influence of an applied sound field on bubble coalescence.J.Acoust.Soc.Am.,1996:99:622—624
16 Duineveld P C.Bouncing and coalescence of bubble pairs rising at high Reynolds number in pure water or aqueous surfactant solutions.Appl.Sci.Res.,1998:58:409—439
17 Postema M,Marmottant P,Lancee C T,Hilgenfeldt S,de Jong N.Ultrasound-induced microbubble coalescence.Ultrasound Med.Biol,2004:30(10):1337—1344
18 Postema M,van Wamel A,Lancee C T,de Jong N.Ultrasound-induced encapsulated microbubble phenomena.Ultrasound Med.Biol,2004:30(6):827—840
19 Jiao Junjie,He Yong,Leong T,Kentish S E,Ashokkumar M,Manasseh R,Lee J.Experimental and theoretical studies on the movements of two bubbles in an acoustic standing wave field.J.Phys.Chem.B.,2013:117(41):12549—12555
20 Jiao Junjie,He Yong,Kentish S E,Ashokkumar M,Manasseh R,Lee J.Experimental and theoretical analysis of secondary Bjerknes forces between two bubbles in a standing wave.Ultrasonics,2015:58:35—42
21 Jiao Junjie,He Yong,Yasui K,Kentish S E,Ashokkumar M,Manasseh R,Lee J.Influence of acoustic pressure and bubble sizes on the coalescence of two contacting bubbles in an acoustic field.Ultrasonics Sonochemistry,2015:22:70—77