Other
Scientific paper
May 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sm52e08l&link_type=abstract
American Geophysical Union, Spring Meeting 2001, abstract #SM52E-08
Other
7524 Magnetic Fields, 7835 Magnetic Reconnection, 7843 Numerical Simulation Studies
Scientific paper
Results from a three-dimensional (3D) axisymmetric resistive magnetohydrodynamic (MHD) simulation are compared to experimental data from the Swarthmore Spheromak Experiment (SSX). The MHD simulation is run under conditions and with dimensionless parameters similar to the experiment (Lundquist number S=1000, plasma beta β = 0.1). The simulation is shown to reproduce global equilibrium magnetic field profiles of the spheromaks as well as much of the detailed reconnection dynamics measured when two spheromaks are merged. It is concluded that SSX merger dynamics may be characterized as MHD reconnection, with the likelihood that extensions are needed to account for kinetic effects in the associated current sheet. Comparison of simulation results achieved with isothermal and polytropic equations of state is made, and the influence of boundary conditions in the merging region on the global equilibrium magnetic fields as well as the local reconnection dynamics is investigated. (Research supported by the USDOE under grants ER54422 and ER54490)
Brown Richard M.
Lukin Vyacheslav S.
Matthaeus William H.
Qin Gan
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