skip to main content

Title: Flux tube train model for local turbulence simulation of toroidal plasmas

A new simulation method for local turbulence in toroidal plasmas is developed by extending the conventional idea of the flux tube model. In the new approach, a train of flux tubes is employed, where flux tube simulation boxes are serially connected at each end along a field line so as to preserve a symmetry of the local gyrokinetic equations for image modes in an axisymmetric torus. Validity of the flux tube train model is confirmed against the toroidal ion temperature gradient turbulence for a case with a long parallel correlation of fluctuations, demonstrating numerical advantages over the conventional method in the time step size and the symmetry-preserving property.
Authors:
 [1] ; ; ;  [2]
  1. Department of Physics, Nagoya University, Nagoya 464-8602 (Japan)
  2. National Institute for Fusion Science, Toki, Gifu 509-5292 (Japan)
Publication Date:
OSTI Identifier:
22408102
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 22; Journal Issue: 2; 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; AXIAL SYMMETRY; COHERENT TUBE MODEL; CORRELATIONS; FLUCTUATIONS; ION TEMPERATURE; PLASMA; SIMULATION; TEMPERATURE GRADIENTS; TOROIDAL CONFIGURATION; TURBULENCE