Rayleigh-Taylor和Richtmyer-Meshkov不稳定性的FCT方法数值模拟

NUMERICAL SIMULATIONS OF THE FCT METHOD ON RAYLEIGH-TAYLOR AND RICHTMYER-MESHKOV INSTABILITIES

摘要: 介绍了二维流体力学不稳定性程序的FCT数值方法,数值模拟Rayleigh-Taylor和Richt-myer-Meshkov流体不稳定性,在线性阶段,与线性理论符合很好;在非线性阶段,与俄罗斯激波管实验的计算结果符合很好。计算结果表明:FCT方法有较高计算精度,给出了不稳定性发展的好的图象,适合于ICF烧蚀和内爆流体不稳定性问题的计算。

Abstract: The low phase error FCT numerical algorithm is introduced,and used to simulate Rayleigh-Taylor(RT) and Richtmyer-Meshkov(RM) instabilities.Simulation results agree well with the linear theories of RT and RM instabilities and the calculation of the shock tube experiment of Russia.It shows that the FCT method is fit to simulations of instabilities of ICF problems.