| Interface Width Effect on the Weakly Nonlinear Rayleigh–Taylor Instability in Spherical Geometry |
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| 作者姓名： | 杨云鹏 张靖 李志远 王立锋 吴俊峰 叶文华 贺贤土 |
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| 作者单位： | 1. School of Physics,Peking University;2. Center for Applied Physics and Technology,HEDPS,and College of Engineering,Peking University;3. Institute of Applied Physics and Computational Mathematics |
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| 基金项目： | Supported by the National Natural Science Foundation of China (Grant Nos.11575033,11675026,and 11975053)； |
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| 摘 要： | Interface width effect on the spherical Rayleigh–Taylor instability in the weakly nonlinear regime is studied by numerical simulations.For Legendre perturbation mode Pn with wave number Kn and interface half-width L,the commonly adopted empirical linear growth rate formula γnem(L)=γn/√1 + KnL is found to be sufficient in spherical geometry.At the weakly nonlinear stage,the interface width affects the mode coupling processes.The development o...
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