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Accueil > Séminaires et conférences > Séminaires, soutenances de thèses et HDR précédents > 2010 > Séminaires 2010 > Le lundi 29 mars à 14h

Le lundi 29 mars à 14h

Chris J. McDevitt
(Center for Astrophysics and Space Sciences, University of California San Diego) - Wave-Mean Flow Interaction in Strongly Magnetized Plasmas

Lundi 29 mars à 14h à Palaiseau (salle de conférence du CPHT)

Résumé

Taylor identities have provided an invaluable tool for the description
of momentum transport within a diverse set of idealized fluid models in both strongly
magnetized plasmas as well as oceanic and atmospheric systems. Here, a kinetic analogue of a Taylor identity appropriate to the description of a diverse set of modes within a strongly magnetized plasma is derived. This relation is subsequently applied to the study of poloidal momentum transport in a tokamak plasma.
Particular emphasis is placed on understanding the spatial organization of a mean poloidal flow in the presence of a background of drift wave microturbulence. Furthermore, mechanisms through which wave stresses may drive a mean toroidal flow are also investigated. A novel means through which plasma microturbulence may accelerate a plasma from rest is discussed. Stress is placed on identifying physical parallels between the turbulent generation of mean flows perpendicular and parallel to the equilibrium magnetic field.


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Tutelles : CNRS Ecole Polytechnique Sorbonne Université Université Paris Sud Observatoire de Paris Convention : CEA
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©2009-2019 Laboratoire de Physique des Plasmas (LPP)

Mentions légales
Exploitant du site : Laboratoire de Physique des Plasmas, Ecole Polytechnique route de Saclay F-91128 PALAISEAU CEDEX
Hébergeur : Laboratoire de Physique des Plasmas, Ecole Polytechnique route de Saclay F-91128 PALAISEAU CEDEX
Directeur de la publication : Pascal Chabert (Directeur)