激波诱导的液柱气液界面RM不稳定性的研究
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摘要
为了进-步研究气/液界面上的Richtmyer-Meshkov(RM)不稳定性现象,在水平激波管中进行了激波与单、双排液柱相互作用的实验.通过使用驱动气体为氮气、被驱动气体为空气,获得了马赫数为1.10与1.25的激波;通过更换不同尺寸的试件获得了初始直径不同的液柱。使用高速摄影仪记录了激波作用之后液柱失稳变形的详细过程,测量分析了不稳定性发展过程中,尖钉高度、气泡深度及混合区域宽度随时间的发展规律,并与理论分析中的公式进行了比较。
For studying the Richtmyer-Meshkov(RM) instability at gas/liquid interface,we conduct some experiments of the interaction between shock wave with single row water column and double rows water columns in a horizontal shock tube.By using nitrogen gas as the high pressure driving gas,we obtain shock waves with Mach numbers of 1.10 and 1.25.We also obtain varisized columns using different test specimens.By using a high-speed camera,the developments of spike height,bubble depth and mixing zone width are measured.The result shows that the RM instability will develop linearly when the shock wave Mach number is low.
For studying the Richtmyer-Meshkov(RM) instability at gas/liquid interface,we conduct some experiments of the interaction between shock wave with single row water column and double rows water columns in a horizontal shock tube.By using nitrogen gas as the high pressure driving gas,we obtain shock waves with Mach numbers of 1.10 and 1.25.We also obtain varisized columns using different test specimens.By using a high-speed camera,the developments of spike height,bubble depth and mixing zone width are measured.The result shows that the RM instability will develop linearly when the shock wave Mach number is low.
引文
[1]Richtmyer R D.Taylor Instability in Shock Acceleration of Compressible Fluids[J].Commun Pure Appl Math,1960,13:297-319
[2]Meshkov E E.Instability of the Interface of Two Gases Accelerated by a Shock Wave[J].Fluid Dynamics,1969,4:101-104
[3]Mikaelian K O.Extended Model for Richtmyer-Meshkov Mix[J].Physica D,2011,240:935-942
[4]施红辉,肖毅,杜凯,等.用垂直激波管研究多层流体界面上Richtmyer-Meshkov不稳定性[J].中国科学技术大学学报,2013,43(9):730-736,768SHI Honghui,XIAO Yi,DU Kai,et al.Experimental Study on Richtmyer-Meshkov Instability at Multi-layered Fluid Interfaces by a Vertical Shock Tube[J].Journal of University of Science and Technology of China,2013,43(9):730-736,768
[5]施红辉,罗喜胜.可压缩性与高速多相流动[M].合肥:中国科学技术大学出版社,2014SHI Honghui,LUO Xisheng.Compressible and HighSpeed Multiphase Flows[M].Hefei:The University of Science and Technology of China Press,2014
[6]肖毅.激波与液滴、液柱及液幕相互作用的空气动力学现象的实验研究[D].杭州:浙江理工大学,2013XIAO Yi.Experimental Investigation on Aerodynamic Phenomenon of Shock Waves'Interaction with Liquid Drop,Column and Curtain[D].Hangzhou:Zhejiang SciTech University,2013
[7]Alon U,Hecht J,Ofer D,et al.Power Laws and Similarity of Rayleigh-Taylor and Richtmyer-Meshkov Mixing Fronts at All Density Ratios[J].Phys Rev Lett,1995,74:534-537
[8]施红辉,吴宇,肖毅,等.激波与液柱相互作用时的气动特性研究[C]//第九届全国实验流体力学学术会议论文集.杭州:中国力学学会流体力学专业委员会实验流体力学专业组,2013:36-42SHI Honghui,WU Yu,XIAO Yi,et al.Deformation and Breakup of Liquid Column under the Impact of Shock Waves[C]//Proceedings of the 9th Chinese National Symposium on Experimental Fluid Dynamics,Hangzhou,2013:36-42
[2]Meshkov E E.Instability of the Interface of Two Gases Accelerated by a Shock Wave[J].Fluid Dynamics,1969,4:101-104
[3]Mikaelian K O.Extended Model for Richtmyer-Meshkov Mix[J].Physica D,2011,240:935-942
[4]施红辉,肖毅,杜凯,等.用垂直激波管研究多层流体界面上Richtmyer-Meshkov不稳定性[J].中国科学技术大学学报,2013,43(9):730-736,768SHI Honghui,XIAO Yi,DU Kai,et al.Experimental Study on Richtmyer-Meshkov Instability at Multi-layered Fluid Interfaces by a Vertical Shock Tube[J].Journal of University of Science and Technology of China,2013,43(9):730-736,768
[5]施红辉,罗喜胜.可压缩性与高速多相流动[M].合肥:中国科学技术大学出版社,2014SHI Honghui,LUO Xisheng.Compressible and HighSpeed Multiphase Flows[M].Hefei:The University of Science and Technology of China Press,2014
[6]肖毅.激波与液滴、液柱及液幕相互作用的空气动力学现象的实验研究[D].杭州:浙江理工大学,2013XIAO Yi.Experimental Investigation on Aerodynamic Phenomenon of Shock Waves'Interaction with Liquid Drop,Column and Curtain[D].Hangzhou:Zhejiang SciTech University,2013
[7]Alon U,Hecht J,Ofer D,et al.Power Laws and Similarity of Rayleigh-Taylor and Richtmyer-Meshkov Mixing Fronts at All Density Ratios[J].Phys Rev Lett,1995,74:534-537
[8]施红辉,吴宇,肖毅,等.激波与液柱相互作用时的气动特性研究[C]//第九届全国实验流体力学学术会议论文集.杭州:中国力学学会流体力学专业委员会实验流体力学专业组,2013:36-42SHI Honghui,WU Yu,XIAO Yi,et al.Deformation and Breakup of Liquid Column under the Impact of Shock Waves[C]//Proceedings of the 9th Chinese National Symposium on Experimental Fluid Dynamics,Hangzhou,2013:36-42