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bibo:Article rdac:C10001

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n6:accretionaccretiondisks n10:sectionsecnuminconnue n6:galaxiesism n6:shockwaves n6:methodsnumerical n6:turbulence n6:magnetohydrodynamics

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A 3D MHD model of astrophysical flows: Algorithms, tests and parallelisation

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2001-01-01

rdaw:P10072

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n13:fd668d00a4f331c4e0f909598768eb29 n2:cauntse

dcterms:abstract

In this paper we describe a numerical method designed for modelling different kinds of astrophysical flows in three dimensions. Our method is a standard explicit finite difference method employing the local shearing-box technique. To model the features of astrophysical systems, which are usually compressible, magnetised and turbulent, it is desirable to have high spatial resolution and large domain size to model as many features as possible, on various scales, within a particular system. In addition, the time-scales involved are usually wide-ranging also requiring significant amounts of CPU time. These two limits (resolution and time-scales) enforce huge limits on computational capabilities. The model we have developed therefore uses parallel algorithms to increase the performance of standard serial methods. The aim of this paper is to report the numerical methods we use and the techniques invoked for parallelising the code. The justification of these methods is given by the extensive tests presented herein.

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n15:researcharticle

hub:publisher-id

aah2618

dcterms:dateCopyrighted

2001-01-01

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© ESO, 2001

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ESO

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