Bulletin of the American Physical Society
49th Annual Meeting of the Division of Plasma Physics
Volume 52, Number 11
Monday–Friday, November 12–16, 2007; Orlando, Florida
Session CP8: Poster Session II: Reconnection and Non-Neutral I; Spheromaks and MCX; MFC Diagnostics; Simulation: Algorithm; Simulation: Kinetic/Edge
Monday, November 12, 2007
Rosen Centre Hotel Room: Grand Ballroom, 2:00pm - 5:00pm
Abstract ID: BAPS.2007.DPP.CP8.107
Abstract: CP8.00107 : A Low Moment Kinetic MHD Simulation Model*
Preview Abstract Abstract
(Univ. of Colorado)
(Univ. of Colorado)
A wide variety of low-frequency macroscopic plasma phenomena are well described assuming quasi-neutrality, neglecting the displacement current and obtaining the electric field with a generalized Ohm's law. With this in mind, one can formulate the kinetic problem using ion density and ion flow moments. Kinetic electron physics enters via the electron pressure term in the generalized Ohm's law. Here, we formulate and test such a model with kinetic ions and an equation of state for the electrons. Whistler waves, shear Alfven waves (with finite gyro-radius corrections) and ion acoustic waves are present in the homogeneous plasma problem. Simulation results with this model are compared to the linear dispersion relation, including ion Landau damping. This simple kinetic particle model based on evaluating lower moments identically models the physics of more sophisticated extended-MHD models where ion kinetics closes via higher moments.
*Work supported by the SciDAC Center for Extended Magnetohydrodynamics.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2007.DPP.CP8.107
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