Matter and Radiation at Extremes, 2018, 3 (4): 207, Published Online: Oct. 2, 2018
The Richtmyer-Meshkov instability of a double-layer interface in convergent geometry with magnetohydrodynamics
Magnetohydrodynamics Magnetohydrodynamics Double density interfaces Double density interfaces Converging shock Converging shock Richtmyer-Meshkov instability Richtmyer-Meshkov instability
Abstract
The interaction between a converging cylindrical shock and double density interfaces in the presence of a saddle magnetic field is numerically investigated within the framework of ideal magnetohydrodynamics. Three fluids of differing densities are initially separated by the two perturbed cylindrical interfaces. The initial incident converging shock is generated from a Riemann problem upstream of the first interface. The effect of the magnetic field on the instabilities is studied through varying the field strength. It shows that the Richtmyer-Meshkov and Rayleigh-Taylor instabilities are mitigated by the field, however, the extent of the suppression varies on the interface which leads to nonaxisymmetric growth of the perturbations. The degree of asymmetry of the interfacial growth rate is increased when the seed field strength is increased.
Yuan Li, Ravi Samtaney, Vincent Wheatley. The Richtmyer-Meshkov instability of a double-layer interface in convergent geometry with magnetohydrodynamics[J]. Matter and Radiation at Extremes, 2018, 3(4): 207.
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