Attenuation of Richtmyer-Meshkov instability growth of fluid layer via double shock  

作　　者：Chenren Chen Jiaxuan Li He Wang Zhigang Zhai Xisheng Luo 

机构地区：[1]Advanced Propulsion Laboratory,Department of Modern Mechanics,University of Science and Technology of China,Hefei,230026,China [2]State Key Laboratory of High-Temperature Gas Dynamics,Institute of Mechanics,Chinese Academy of Sciences,Beijing,100190,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2025年第4期144-151,共8页中国科学:物理学、力学、天文学(英文版)

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.12372281,12102425,12388101,and 123B2034);the Strategic Priority Research Program of Chinese Academy of Sciences(Grant No.XDB0620201);the Youth Innovation Promotion Association CAS。

摘　　要：Suppression of the hydrodynamic instabilities involved in the inertial confinement fusion has attracted much attention but remains a challenge.In this work,we report the first theoretical analysis and experimental validation on attenuating the instability growth of a shock-accelerated fluid layer through a second shock impact.An analytical model is established to predict linear growth rates of the perturbations at two interfaces of the layer by considering both the effects of interface coupling and reverberating waves.Theoretically,there are nine possibilities for simultaneously attenuating the instability growths of perturbations at the two interfaces.Accordingly,shock-tube experiments are specially designed and conducted,and nine possibilities are all realized by experiments,which verifies the reliability of the analytical model and also demonstrates the feasibility of attenuating the instability growth of a fluid layer via double shock.

关 键 词：shock waves Richtmyer-Meshkv instability fluid layer 

分 类 号：O55[理学—热学与物质分子运动论]