Effect of initial phase on the ablative Rayleigh-Taylor instability

被引：0
|
作者：
Kuang, Yuanyuan [1 ,2 ]
Lu, Yan [1 ]
Lin, Zhi [1 ,3 ]
Yang, Ming [1 ,4 ]
机构：
[1] Anhui Univ, Sch Phys & Optoelect Engn, Hefei 230601, Peoples R China
[2] Anhui Energy Lab, Inst Energy, Hefei Comprehens Natl Sci Ctr, Hefei 230031, Peoples R China
[3] Fudan Univ, Dept Phys, State Key Lab Surface Phys, Shanghai 200433, Peoples R China
[4] Hefei Comprehens Natl Sci Ctr, Inst Artificial Intelligence, Hefei 230088, Peoples R China
来源：
PHYSICS OF PLASMAS | 2023年 / 30卷 / 10期
基金：
中国国家自然科学基金;
关键词：
DRIVE APPROACH; PHYSICS BASIS; GROWTH-RATES; STABILIZATION; INTERFACE; TRANSPORT; IGNITION;
D O I：
10.1063/5.0152239
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
The effect of initial perturbation phase on the ablative Rayleigh-Taylor instability is investigated by numerical simulations. We aim at the growth of harmonic amplitudes and the formation of spikes and bubbles in single- and two-mode coupling cases, respectively. In the two-mode coupling case, two kinds of simulations are performed: two modes with relatively small linear growth rate difference and two modes with relatively large linear growth rate difference. The initial relative phase between the original two modes has a significant effect on the growth of harmonic amplitudes, and in different initial relative phases, the structures of spikes and bubbles begin to show great differences in the nonlinear stage. Fortunately, the harmonic amplitudes are weakened at a specific initial relative phase. This has a certain enlightening significance for the stabilization of ablative Rayleigh-Taylor instability.
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收藏
页数：11
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