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| Titel |
Extended Magnetohydrodynamics with Embedded Particle-in-Cell (XMHD-EPIC) Simulations of Magnetospheric Reconnection |
| VerfasserIn |
Gabor Toth, Tamas Gombosi, Xianzhe Jia, Daniel Welling, Yuxi Chen, John Haiducek, Vania Jordanova, Ivy Bo Peng, Stefano Markidis, Giovanni Lapenta |
| Konferenz |
EGU General Assembly 2016
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 18 (2016) |
| Datensatznummer |
250123144
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| Publikation (Nr.) |
 EGU/EGU2016-2344.pdf |
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| Zusammenfassung |
| We have recently developed a new modeling capability to embed the
implicit Particle-in-Cell (PIC) model iPIC3D into the BATS-R-US
extended magnetohydrodynamic model. The PIC domain can cover the regions where
kinetic effects are most important, such as reconnection sites. The
BATS-R-US code with its block-adaptive grid can efficiently handle the rest of
the computational domain where the MHD or Hall MHD description is sufficient.
The current implementation of the MHD-EPIC model
allows two-way coupled simulations in two and three dimensions with multiple
embedded PIC regions. The MHD and PIC grids can have different
grid resolutions and grid structures. The MHD variables and the moments
of the PIC distribution functions are interpolated and message passed
in an efficient manner through the Space Weather Modeling Framework (SWMF).
Both BATS-R-US and iPIC3D are massively parallel codes fully
integrated into, run by and coupled through the SWMF.
We have successfully applied the MHD-EPIC code to model Ganymede's
and Mercury's magnetospheres. We compared our results with Galileo
and MESSENGER magnetic observations, respectively, and found good
overall agreement. We will report our progress on modeling the Earth
magnetosphere with MHD-EPIC with the goal of providing direct
comparison with and global context for the MMS observations. |
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