Title: GRADSPMHD: A parallel MHD code based on the SPH formalism
Authors: Vanaverbeke, Sigfried ×
Keppens, Rony
Poedts, Stefaan #
Issue Date: 2014
Publisher: North-Holland Pub. Co.
Series Title: Computer Physics Communications vol:185 issue:3 pages:1053-1073
Abstract: We present GRADSPMHD, a completely Lagrangian parallel magnetohydrodynamics code based on the
SPH formalism. The implementation of the equations of SPMHD in the ‘‘GRAD-h’’ formalism assembles
known results, including the derivation of the discretized MHD equations from a variational principle, the
inclusion of time-dependent artificial viscosity, resistivity and conductivity terms, as well as the inclusion
of a mixed hyperbolic/parabolic correction scheme for satisfying the ∇ · ⃗B constraint on the magnetic
field. The code uses a tree-based formalism for neighbor finding and can optionally use the tree code
for computing the self-gravity of the plasma. The structure of the code closely follows the framework
of our parallel GRADSPH FORTRAN 90 code which we added previously to the CPC program library. We
demonstrate the capabilities of GRADSPMHD by running 1, 2, and 3 dimensional standard benchmark
tests and we find good agreement with previous work done by other researchers. The code is also applied
to the problem of simulating the magnetorotational instability in 2.5D shearing box tests as well as in
global simulations of magnetized accretion disks. We find good agreement with available results on this
subject in the literature. Finally, we discuss the performance of the code on a parallel supercomputer with
distributed memory architecture.
ISSN: 0010-4655
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Plasma-astrophysics Section
× corresponding author
# (joint) last author

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