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.
引文
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