Center for Space Environment Modeling

University of Michigan, Ann Arbor, Michigan, USA

**Abstract**:
Techniques that have become common in aerodynamics
codes have recently begun to be implemented in
space-physic codes, which solve the governing equations for
a compressible plasma.
These techniques include high-resolution upwind schemes,
block-based solution-adaptive grids
and domain decomposition for parallelization.
While some of these techniques carry over relatively straightforwardly
from aerodynamics to space physics, space physics simulations
pose some new challenges. This paper gives a brief
review of the state-of-the-art in modern space-physics codes,
including a validation study of several of the techniques in
common use. A remaining challenge is that of flows that
include regions in which relativistic effects are important;
some background and preliminary results for these problems are given.

**Keywords**: space plasma, magnetohydrodynamis (MHD),
solution adaptive mesh refinement (AMR),
Cartesian adaptive grid, adaptive blocks, parallel computing

**Complete paper**.
This paper appears in *Proc. ISSS-6* (2001).

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