Analysis of classical transport equations for the Tokamak edge plasma Metadata

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Title

  • Main Title Analysis of classical transport equations for the Tokamak edge plasma

Creator

  • Author: Rognlien, T. D., LLNL
    Creator Type: Personal

Contributor

  • Sponsor: United States
    Contributor Type: Organization

Date

  • Creation: 1997-09-29

Language

  • English

Description

  • Content Description: The classical fluid transport equations for a magnet-plasma as given, for example, by Braginskii [1], are complicated in their most general form. Here we obtain the simplest reduced set which contains the essential physics of the tokamak edge problem in slab geometry by systematically applying a parameter ordering and making use of specific symmetries. An important ingredient is a consistent set of boundary conditions as described elsewhere [2]. This model clearly resolves some important issues concerning diamagnetic drifts, high parallel viscosity, and the ambipolarity constraint. The final equations can also serve as a model for understanding the structure of the equations in the presence of anomalous transport terms arising from fluctuations. In fact, Braginskii-like equations are the basis of a number of scrape-off layer (SOL) transport codes [3]. However, all of these codes contain ad hoc radial diffusion terms and often neglect some classical terms, both of which make the self-consistency of the models questionable. Braginskii's equations [1] have been derived from the first principles via the kinetic equations and, thereby, contain such ''built-in'' features as the symmetry of kinetic coefficients, and automatic quasineutrality of a cross-field diffusion in a system with toroidal symmetry such as a tokamak. Our model thus maintains these properties.
  • Physical Description: 9 pages; Other: FDE: PDF

Subject

  • Keyword: Kinetic Equations
  • Keyword: Diffusion
  • Keyword: Symmetry
  • Keyword: Geometry
  • Keyword: Kinetics
  • Keyword: Transport
  • Keyword: Boundary Conditions
  • Keyword: Physics
  • STI Subject Categories: 54 Environmental Sciences
  • Keyword: Fluctuations
  • Keyword: Viscosity
  • Keyword: Plasma

Source

  • Conference: Plasma Edge Theory Conference, Oxford (GB), 09/15/1997--09/17/1997; Other Information: Supercedes report DE98051024; PBD: 29 Sep 97

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Other: DE98051024
  • Report No.: UCRL-JC-127390
  • Report No.: CONF-9709115*--
  • Grant Number: W-7405-Eng-48
  • Office of Scientific & Technical Information Report Number: 16405
  • Archival Resource Key: ark:/67531/metadc625499

Note

  • Display Note: OSTI as DE00016405