Visualization and Analyses of Three Dimensional Magnetohydrodynamic Shock Surface

概要

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The dynamics of large-scale magnetic loop in three dimensions is studied by magnetohydrodynamics simulations. The spontaneous fast reconnection model is used in this study. Once a current-driven anomalous resistivity is ignited in a local region in the current sheet, the fast reconnection mechanism spontaneously evolves. As a result, large magnetic loop is developed, and very localized high pressure region is appeared in front of the magnetic loop. Near the region between magnetic loop and the high pressure region, very large vortex flow is appeared, and then, the high pressure region more and more localized due to this vortex. Plasma are accelerated by slow shock pairs elongated from X line. These accelerated very fast plasma jet collides with this high pressure region, giving rise to fast shock in the finite extent. In this paper, we show the three dimensional visualization method of shock surfaces applied metaball technique, which is one of the three dimensional modeling methods. This three dimensional visualization of shock surfaces allowed us to understand three dimensional configuration and evolution of them.
愛媛大学の論文