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A closure scheme for modeling rf modifications to the fluid equations

Phys. Plasmas 16, 112501 (2009); doi:10.1063/1.3258850

Published 2 November 2009

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C. C. Hegna and J. D. Callen
Departments of Engineering Physics and Physics, University of Wisconsin–Madison, Madison, Wisconsin 53706-1609, USA
A procedure to include the effects of externally applied rf sources in a comprehensive fluid model is outlined. The fluid equations are derived from moments of a kinetic equation that includes the effects of an rf source. In general, this source produces additional terms in each of the fluid equations. A complete derivation requires the specification of the closure moments; calculations for the stress tensors and heat fluxes that are altered by the presence of the rf are required. By treating the rf induced modification as producing a small distortion away from the background Maxwellian distribution function, a procedure for calculating the closure moments can be formulated. Using a Chapman–Enskog-like procedure, a kinetic equation for the kinetic distortion can be derived that includes the rf-induced contributions to the fluid equations as sources. ©2009 American Institute of Physics
History: Received 20 August 2009; accepted 14 October 2009; published 2 November 2009
Permalink: http://link.aip.org/link/?PHPAEN/16/112501/1
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KEYWORDS and PACS

Keywords
PACS
  • 52.25.Dg
    Plasma kinetic equations
  • 52.30.Ex
    Two-fluid and multi-fluid plasmas
  • 52.35.Py
    Plasma macroinstabilities (hydromagnetic)
  • 52.55.Wq
    Current drive; helicity injection in magnetic plasma confinement
  • YEAR: 2009

PUBLICATION DATA

ISSN:
1070-664X (print)   1089-7674 (online)
Publisher:
AIP is a member of CrossRef AIP

REFERENCES (24)
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