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New collisional multi-species drift-fluid equations have been derived by a new method which yields, in a transparent way, conservation of energy and total angular momentum and the law for energy dissipation. Both electrostatic and electromagnetic field variations are considered. The only restriction involved is the validity of the drift approximation; in particular, there are no assumptions restricting the geometry of the system. The method is based primarily on a Lagrangian for dissipationless fluids in the drift approximation with isotropic pressures. The dissipative terms are introduced by adding corresponding terms to the ideal equations of motion and of pressures.

Additional information

Authors: PFIRSCH D, Max-Planck-Institut für Plasmaphysik, Garching (DE);CORREA-RESTREPO D, Max-Planck-Institut für Plasmaphysik, Garching (DE)
Bibliographic Reference: Article: Plasma Physics and Controlled Fusion, Vol. 38 (1996) pp. 71-101
Record Number: 199610322 / Last updated on: 1996-03-29
Original language: en
Available languages: en