可控肥皂膜气柱界面与激波相互作用的实验研究（英文）  

Experimental studyof shock interactingwith well-controlled gas cylinder generated bysoapfilm

作　　者：罗喜胜[1] 王显圣[1] 陈模军 翟志刚[1] 

机构地区：[1]中国科学技术大学近代力学系先进推进实验室,合肥230027

出　　处：《实验流体力学》2014年第2期7-13,26,共8页Journal of Experiments in Fluid Mechanics

基　　金：National Natural Science Foundation of China(10972214);Knowledge Innovation Program of the Chinese Academy of Sciences(CX2090050020)

摘　　要：基于肥皂膜技术提出了一种生成气柱界面的简单方法。形成的界面不需要支撑网格,因此初始条件可以很好地控制。在水平激波管中结合高速纹影开展了平面激波与二维或三维气柱界面作用的实验。纹影照片显示实验结果杂波更少,演变中的界面也比文献的结果更对称。此外,还特别研究了由极小曲面特征导致的三维效应,发现三维效应使界面的演变和发展变慢了。本研究将有助于更多了解三维性对Richtmyer-Meshkov不稳定性发展的影响。A simple method of generating gas cylinder is proposed by using the soap film technique.The formed interface is free of supporting mesh and the initial condition can be well controlled .Experiments are then carried out in a horizontal shock tube for a planar shock wave interacting with a two-dimensional or threedimensional cylinder using high-speed schlieren technique. It is found that the schlieren images have fewer disturbing waves and the evolving interfaces are more symmetric comparing with the results in literature.Special attention is given to the threedimensional effects caused by the minimum surface feature on the interface evolution and it is in-dicated that the interface evolving rate of three-dimensional cylinder is slower than that of two-di-mensional cylinder.This work will facilitate more understanding about the three-dimensional effect on the development of the Richtmyer-Meshkov instability.

关 键 词：肥皂膜 RICHTMYER-MESHKOV不稳定性 极小曲面 激波-气柱相互作用 

分 类 号：V211.7[航空宇航科学与技术—航空宇航推进理论与工程]