skip to main content

Title: Two-fluid equilibrium with flow: FLOW2

The effects of finite macroscopic velocities on axisymmetric ideal equilibria are examined using the two-fluid (ions and electrons) model. A new equilibrium solver, the code FLOW2, is introduced for the two-fluid model and used to investigate the importance of various flow patterns on the equilibrium of tight aspect ratio (NSTX) and regular tokamak (DIII-D) configurations. Several improvements to the understanding and calculation of two-fluid equilibria are presented, including an analytical and numerical proof of the single-fluid and static limits of the two-fluid model, a discussion of boundary conditions, a user-friendly free-function formulation, and the explicit evaluation of velocity components normal to magnetic surfaces.
Authors:
 [1] ;  [2]
  1. Physics Department, Auburn University, Auburn, Alabama 36849 (United States)
  2. Department of Mechanical Engineering, University of Rochester, Rochester, New York 14627 (United States)
Publication Date:
OSTI Identifier:
22490160
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 22; Journal Issue: 9; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ASPECT RATIO; AXIAL SYMMETRY; BOUNDARY CONDITIONS; DOUBLET-3 DEVICE; ELECTRONS; EQUILIBRIUM; F CODES; FLUIDS; IONS; MAGNETIC SURFACES; NSTX DEVICE