A multidimensional grid-adaptive relativistic magnetofluid code

Details A multidimensional grid-adaptive relativistic magnetofluid code A multidimensional grid-adaptive relativistic magnetofluid code

2008-07-04

arxiv.org/abs/0807.0713v1

Astronomy and Astrophysics

Astrophysics

accepted for publication in Computer Physics Communications

Scientific paper

10.1016/j.cpc.2008.05.005

A robust second order, shock-capturing numerical scheme for multi-dimensional special relativistic magnetohydrodynamics on computational domains with adaptive mesh refinement is presented. The base solver is a total variation diminishing Lax-Friedrichs scheme in a finite volume setting and is combined with a diffusive approach for controlling magnetic monopole errors. The consistency between the primitive and conservative variables is ensured at all limited reconstructions and the spatial part of the four velocity is used as a primitive variable. Demonstrative relativistic examples are shown to validate the implementation. We recover known exact solutions to relativistic MHD Riemann problems, and simulate the shock-dominated long term evolution of Lorentz factor 7 vortical flows distorting magnetic island chains.

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