ALEGRA-MHD : version 4.6

Abstract

ALEGRA is an arbitrary Lagrangian-Eulerian finite element code that emphasizes large distortion and shock propagation in inviscid fluids and solids. This document describes user options for modeling resistive magnetohydrodynamic, thermal conduction, and radiation emission effects. 3 AcknowledgmentThe authors wish to acknowledge the contributions of Kent Budge to early draft versions of this manual and associated algorithms in the areas of thermal conduction, emission and opacity modeling.Pavel Bochev has made important contributions to the description and understanding of the edge element discretization for the 3D magnetics. Jonathan Hu and Ray Tuminaro have been instrumental in the development and implementation of the algebraic multigrid software.Bob Campbell, Dan Carroll, Mike Desjarlais, Ray Lemke, Bryan Oliver, Steve Rosenthal, and Erik Wemlinger have used and tested the MHD physics options in the ALEGRA-MHD code and provided invaluable feedback.We would also like to acknowledge the support of the members of the NEVADA framework development team and the rest of the ALEGRA development team. Their perpetual assistance in areas of team leadership, architecture, configuration management, regression testing, Diatom insertion, remap and advection, and more, have been invaluable.

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