ON LINEAR AND NONLINEAR ANALYSIS OF JET AND CURRENT SHEET INTERACTIONS IN THE SOLAR SYSTEM: 2D HYBRID COMPACT SHOCK CAPTURING SIMULATIONS

摘要

In order to describe the dynamics and evolution of complex structures determined by the interactions between jet/wake flows and current sheets in the Heliospheric region and, in general, in the astrophysical environment, we use a general model consisting into a sheared flow in the presence of strong magnetic field gradients. Here we present the first results obtained with a 2D high order upwind "weno+compact" numerical scheme which solves the compressive MHD equations and combines the shock capturing property with a pseudo-spectral analysis method, allowing to reach those high values of sonic and Alfvenic Mach number which necessarily characterize such systems.