DocumentCode :
1436867
Title :
An adaptive MHD method for global space weather simulations
Author :
de Zeeuw, Darren L. ; Gombosi, Tamas I. ; Groth, Clinto P T ; Powell, Kenneth G. ; Stout, Quentin F.
Author_Institution :
Space Phys. Res. Lab., Michigan Univ., Ann Arbor, MI, USA
Volume :
28
Issue :
6
fYear :
2000
fDate :
12/1/2000 12:00:00 AM
Firstpage :
1956
Lastpage :
1965
Abstract :
A 3D parallel adaptive mesh refinement (AMR) scheme is described for solving the partial-differential equations governing ideal magnetohydrodynamic (MHD) flows. This new algorithm adopts a cell-centered upwind finite-volume discretization procedure and uses limited solution reconstruction, approximate Riemann solvers, and explicit multi-stage time stepping to solve the MHD equations in divergence form, providing a combination of high solution accuracy and computational robustness across a large range in the plasma β (β is the ratio of thermal and magnetic pressures). The data structure naturally lends itself to domain decomposition, thereby enabling efficient and scalable implementations on massively parallel supercomputers. Numerical results for MHD simulations of magnetospheric plasma flows are described to demonstrate the validity and capabilities of the approach for space weather applications
Keywords :
astrophysical plasma; geophysics computing; ionosphere; magnetosphere; plasma magnetohydrodynamics; plasma simulation; solar wind; MHD equations; MHD flow; adaptive MHD method; adaptive mesh refinement; algorithm; approximate Riemann solver; cell-centered upwind finite-volume discretization; divergence form; domain decomposition; explicit multi-stage time stepping; global simulation; ideal magnetohydrodynamic flow; ionosphere; limited solution reconstruction; magnetohydrodynamics; magnetosphere; massively parallel supercomputer; numerical model; partial-differential equations; plasma flow; solar wind; space weather; three dimensional model; Adaptive mesh refinement; Computational modeling; Data structures; Equations; Magnetic domains; Magnetohydrodynamics; Magnetosphere; Plasma simulation; Robustness; Supercomputers;
fLanguage :
English
Journal_Title :
Plasma Science, IEEE Transactions on
Publisher :
ieee
ISSN :
0093-3813
Type :
jour
DOI :
10.1109/27.902224
Filename :
902224
Link To Document :
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