激波诱导下的气体界面不稳定性实验研究

界面不稳定性, 特别是Richtmyer–Meshkov (RM) 不稳定性, 是流体
力学中一项重要的研究内容, 无论在学术研究领域还是工程应用领域都有着
重要的研究价值和应用背景. RM 不稳定性问题自提出以来, 得到了学术界
广泛的关注, 其研究无论是在实验方法、数值模拟还是在理论分析方面都取
得了很大的进展. 在激波管中开展激波与界面相互作用的实验研究, 即研究
界面初始扰动在激波诱导下的演化规律, 是目前研究RM 不稳定性的重要手
段. RM 不稳定性实验研究包括3 个部分, 分别是激波的产生、界面的形成
以及流场的观测. 综述了RM 不稳定性的实验研究进展, 并针对目前研究的
局限性提出了RM 不稳定性今后实验研究的重点和方向: 汇聚激波作用下界
面不稳定性的发展规律; 激波冲击下多种形状及大振幅界面的演化机理; 三
维界面的RM 不稳定性发展规律; 可压缩湍流的形成与混合机理. 

Experimental study on the interfacial instability induced by shock waves

Interfacial instability, especially the Richtmyer-Meshkov (RM) instability, is
a significant topic in fluid mechanics because of its academic implication and engineering
applications. Much attention has been paid to RM instability since it was proposed. Great
progresses have been made through experimental, numerical and theoretical investigations.
Currently, it is an important tool for the study of RM instability to perform the experiment
of a shock wave interacting with a fluid interface in the shock tube. The generation of a
shock wave, the formation of an initial interface and the diagnostic of the flow field are the
three elements that must be considered in the experimental study of RM instability. This
review article surveys the advances in experimental investigations of RM instability, and
proposes the following issues for future study: (1) evolution of the RM instability induced
by cylindrical converging shock waves; (2) developments of the polygonal interface and the
initial perturbation with large amplitudes accelerated by shock waves; (3) the effect of the
three space dimensions on the RM instability; and (4) the formation and mixing mechanism
of the compressible turbulence.