Guide Field Reconnection: Energy Transfer and Global Constraints in PIC and MHD Simulations

Details Guide Field Reconnection: Energy Transfer and Global Constraints in PIC and MHD Simulations Guide Field Reconnection: Energy Transfer and Global Constraints in PIC and MHD Simulations

Dec 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008agufmsm31b1724b&link_type=abstract

American Geophysical Union, Fall Meeting 2008, abstract #SM31B-1724

Physics

2723 Magnetic Reconnection (7526, 7835), 2724 Magnetopause And Boundary Layers, 2744 Magnetotail, 7519 Flares, 7526 Magnetic Reconnection (2723, 7835)

Scientific paper

Using PIC and resistive MHD simulations of the Newton challenge problem with a guide field, we investigate energy conversion in low and high beta current sheets. The energy transfer from reconnection mainly consists of a redirection of Poynting flux and a generation of enthalpy flux, involving compressional heating and Joule dissipation, whereas only a small amount of energy gets converted to bulk flow energy. Joule heating appears to play a relatively larger role in low-beta current sheets than for high beta. We also investigate the conservation of global quantities on moving and reconnected field lines, such as mass, entropy and the displacement of field line footpoints.

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