Landau fluid model for weakly nonlinear dispersive magnetohydrodynamics

Journal Article · Wed Sep 28 04:00:00 EDT 2005 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.2077172· OSTI ID:20719383

Passot, T; Sulem, P L ^[1]

---

1. CNRS, Observatoire de la Cote d'Azur, B.P. 4229, 06304 Nice Cedex 4 (France)

A Landau fluid model for the large-scale dynamics of collisionless plasmas is presented. It extends the Hall-MHD description by retaining pressure anisotropy, Landau damping and leading finite Larmor radius (FLR) corrections. This approach that provides an accurate description of the weakly nonlinear dynamics of long-wavelength Alfven waves is also successfully compared with hybrid simulations of modulational and decay instabilities. The limitations of this model in situations where FLR corrections to all orders are to be retained, as for example in the presence of mirror modes, are analyzed and further developments to include such effects are discussed.

• OSTI ID: 20719383
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 784; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ALFVEN WAVES
ANISOTROPY
COLLISIONLESS PLASMA
CORRECTIONS
DECAY INSTABILITY
FLUIDS
LANDAU DAMPING
LARMOR RADIUS
MAGNETOHYDRODYNAMICS
NONLINEAR PROBLEMS
PLASMA WAVES
SIMULATION
WAVELENGTHS