中国物理B ›› 2024, Vol. 33 ›› Issue (12): 125203-125203.doi: 10.1088/1674-1056/ad8551

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Suppression of the Kelvin-Helmholtz instability by coating in the double-cone ignition scheme

Yuan-Kai Xie(谢元凯)1,2, Cheng-Long Zhang(张成龙)2, Yi-Zhen Cheng(程翊真)1,2, and Ying-Jun Li(李英骏)2,†   

  1. 1 School of Science, China University of Mining and Technology, Beijing 100083, China;
    2 State Key Laboratory for Tunnel Engineering, China University of Mining and Technology, Beijing 100083, China
  • 收稿日期:2024-07-30 修回日期:2024-09-09 接受日期:2024-10-10 发布日期:2024-11-12
  • 通讯作者: Ying-Jun Li E-mail:lyj@aphy.iphy.ac.cn
  • 基金资助:
    Project supported by the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDA 25051000).

Suppression of the Kelvin-Helmholtz instability by coating in the double-cone ignition scheme

Yuan-Kai Xie(谢元凯)1,2, Cheng-Long Zhang(张成龙)2, Yi-Zhen Cheng(程翊真)1,2, and Ying-Jun Li(李英骏)2,†   

  1. 1 School of Science, China University of Mining and Technology, Beijing 100083, China;
    2 State Key Laboratory for Tunnel Engineering, China University of Mining and Technology, Beijing 100083, China
  • Received:2024-07-30 Revised:2024-09-09 Accepted:2024-10-10 Published:2024-11-12
  • Contact: Ying-Jun Li E-mail:lyj@aphy.iphy.ac.cn
  • Supported by:
    Project supported by the Strategic Priority Research Program of Chinese Academy of Sciences (Grant No. XDA 25051000).

摘要: In order to address the issue of gold mixing caused by the Kelvin-Helmholtz instability (KHI) in the double-cone ignition (DCI) scheme, we investigate the growth rate of the KHI at the bi-interface of the DCI scheme after applying a coating. This is done by solving the hydrodynamic equations for an ideal incompressible fluid using linear theory. Ultimately, it is discovered that applying a coating with a thickness slightly above h=0.5(λ+10 μm) and a density somewhat lower than that of the target layer can effectively reduce the growth rate of interfacial KHI. This work provides theoretical references for studying the bi-interface KHI in the DCI scheme.

关键词: coating, Kelvin-Helmholtz instability, double-cone ignition scheme, growth rate

Abstract: In order to address the issue of gold mixing caused by the Kelvin-Helmholtz instability (KHI) in the double-cone ignition (DCI) scheme, we investigate the growth rate of the KHI at the bi-interface of the DCI scheme after applying a coating. This is done by solving the hydrodynamic equations for an ideal incompressible fluid using linear theory. Ultimately, it is discovered that applying a coating with a thickness slightly above h=0.5(λ+10 μm) and a density somewhat lower than that of the target layer can effectively reduce the growth rate of interfacial KHI. This work provides theoretical references for studying the bi-interface KHI in the DCI scheme.

Key words: coating, Kelvin-Helmholtz instability, double-cone ignition scheme, growth rate

中图分类号:  (Laser inertial confinement)

  • 52.57.-z
52.30.Ex (Two-fluid and multi-fluid plasmas) 47.20.Ft (Instability of shear flows (e.g., Kelvin-Helmholtz))