Effect of ablation on the nonlinear spike growth for the single-mode ablative Rayleigh-Taylor instability

作     者：J.Y.Fu H.S.Zhang H.B.Cai P.L.Yao S.P.Zhu J.Y.Fu;H.S.Zhang;H.B.Cai;P.L.Yao;S.P.Zhu

作者机构：Institute of Applied Physics and Computational MathematicsBeijing 100088People’s Republic of China Laboratory of Computational PhysicsInstitute of Applied Physics and Computational MathematicsBeijing 100088People’s Republic of China Graduate SchoolChina Academy of Engineering PhysicsP.O.Box 2101Beijing 100088People’s Republic of China Science and Technology on Plasma Physics LaboratoryLaser Fusion Research CenterCAEPMianyang 621900People’s Republic of China 

出 版 物：《Matter and Radiation at Extremes》 (极端条件下的物质与辐射（英文）)

年 卷 期：2023年第8卷第1期

页      面：53-62页

核心收录：

学科分类：07[理学] 0804[工学-仪器科学与技术] 0701[理学-数学] 070101[理学-基础数学] 

主　　题：phase nonlinear bubble 

摘      要：The effect of ablation on the nonlinear spike growth of single-mode ablative Rayleigh–Taylor instability(RTI)is studied by two-dimensional numerical *** is shown that the ablation can reduce the quasi-constant velocity and significantly suppress the reacceleration of the spike in the nonlinear *** is also shown that the spike growth can affect the ablation-generated vorticity inside the bubble,which further affects the nonlinear bubble *** vorticity evolution is found to be correlated with the mixing width(i.e.,the sum of the bubble and spike growths)for a given wave number and ablation *** considering the effects of mass ablation and vorticity,an analytical model for the nonlinear bubble and spike growth of single-mode ablative RTI is developed in this *** is found that the nonlinear growth of the mixing width,induced by the single mode,is dominated by the bubble growth for small-scale ablative RTI,whereas it is dominated by the spike growth for classical RTI.