Physics – Plasma Physics
Scientific paper
Jun 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003jgra..108.1237l&link_type=abstract
Journal of Geophysical Research Space Physics, Volume 108, Issue A6, pp. SMP 10-1, CiteID 1237, DOI 10.1029/2002JA009702
Physics
Plasma Physics
8
Space Plasma Physics: Experimental And Mathematical Techniques, Magnetospheric Physics: Planetary Magnetospheres (5443, 5737, 6030), Magnetospheric Physics: Numerical Modeling, Space Plasma Physics: Numerical Simulation Studies
Scientific paper
We describe a method to compute three-dimensional force equilibria in the Earth's magnetosphere. The method is embodied in a code called the MagnetoFriction code which solves a set of ideal magnetohydrodynamic (MHD) equations that are modified to include a frictional dissipation term in the momentum equation. The friction takes the form of a force which is directed against the fluid motion and is therefore an energy sink. This allows the system to settle into a minimum energy equilibrium. A nonuniform cartesian grid is used along with initial conditions supplied by empirical magnetic field and pressure models. These initial conditions do not, in general, satisfy the force balance condition J × B = \nablap, and the code must iterate until approximate force balance is achieved. Pressure and magnetic field solutions are presented for several different configurations of the magnetosphere.
Birn Joachim
Hesse Michael
Lemon Colby
Toffoletto Frank
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