Numerical investigation of temporal evolution of perturbed interface between two ideal fluids in 3 dimensional, spherical geometry

Full text: In this paper the temporal evolution of the plane interface between two ideal semi-infinite plasmas is considered by means of three-dimensional Riemann solver for the Novier-Stocks equations in spherical geometry. Using three-dimensional Riemann solver for the these equations, the time evolution of the arcuate perturbed interface is investigated. It is shown that the perturbation grows similar to a mushroom instability such as Rayliegh- Taylor and Richtmyer-Meshkov instabilities in fluids. This work can be applied for plasma phenomenon in ICF and astrophysics by applying an external magnetic field, but it will converse later. (author)