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CPHYSICS
2004

Hybrid kinetic-MHD simulations in general geometry

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Hybrid kinetic-MHD simulations in general geometry
We present a hybrid kinetic-MHD model consisting of 3 species, the bulk fluid ions and electrons, and a kinetic minority hot particle species. The 3 species equations are derived from moments of the Vlasov Equation and then reduced using the usual hot particle assumption of nh n0, h 0 to formulate the hybrid kinetic MHD model. The 3 species equations reproduce the usual MHD equations with the addition of a hot particle pressure in the momemtum equation. In the limit nh 0, the MHD equations are recovered. These model equations are implemented and examined in the NIMROD code [C.R. Sovinec, et al, "Nonlinear Magnetohydrodynamic Simulations Using Higher-Order Finite Elements", submitted to JCP] which solves three dimensional magnetohydrodynamic initial-value problems using the finite element method(FEM). The finite elements allow the represention of highly shaped geometries, but the particle-in-cell (PIC) method is complicated by the irregular grid. The associated complication...
Charlson C. Kim, Carl R. Sovinec, Scott E. Parker
Added 17 Dec 2010
Updated 17 Dec 2010
Type Journal
Year 2004
Where CPHYSICS
Authors Charlson C. Kim, Carl R. Sovinec, Scott E. Parker
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