Nonlocal Nonlinear Electrostatic Gyrofluid Equations: A four-moment model

Details Nonlocal Nonlinear Electrostatic Gyrofluid Equations: A four-moment model Nonlocal Nonlinear Electrostatic Gyrofluid Equations: A four-moment model

2004-10-29

arxiv.org/abs/physics/0410276v1

Physics of Plasmas, vol. 12, 052517 (2005)

Physics

Plasma Physics

22 pages, 0 figures, submited to Physics of Plasmas

Scientific paper

10.1063/1.1807850

Extending a previous single-temperature model, an electrostatic gyrofluid model that includes anisotropic temperatures (parallel and perpendicular) and can treat general nonlinear situations is constructed. The model is based on a Lagrangian formulation of gyrofluid dynamics, which leads to an exact energy conservation law. Diamagnetic cancelations are inserted manually in such a way that energy conservation is preserved. Comparison with previous models shows a very good agreement for zero-Larmor-radius terms in the gyrofluid equations of motion.

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