skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Fluid simulations of turbulent impurity transport

Abstract

Impurity transport in tokamak plasmas is studied with a fluid turbulence code, which has been upgraded to implement two ion species and electrons. The (fixed-flux) simulations are compared to the predictions of a quasilinear model. These simulations mostly agree with quasilinear estimates; they indicate that a turbulent impurity pinch exists. Moreover, this pinch is found to be dominated by curvature terms, as thermodiffusion pinches are found to decrease as 1/Z and observed parallel velocity effects remain weak. The sign of the pinch is also investigated.

Authors:
; ; ; ;  [1]
  1. Association Euratom-CEA, CEA/DSM/DRFC, Centre de Cadarache, 13108 Saint-Paul-Lez-Durance (France)
Publication Date:
OSTI Identifier:
20974922
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 14; Journal Issue: 4; Other Information: DOI: 10.1063/1.2710461; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ELECTRONS; FORECASTING; IONS; PINCH EFFECT; PLASMA; PLASMA CONFINEMENT; PLASMA IMPURITIES; PLASMA SIMULATION; THERMAL DIFFUSION; TOKAMAK DEVICES; TURBULENCE

Citation Formats

Dubuit, N., Garbet, X., Parisot, T., Guirlet, R., and Bourdelle, C. Fluid simulations of turbulent impurity transport. United States: N. p., 2007. Web. doi:10.1063/1.2710461.
Dubuit, N., Garbet, X., Parisot, T., Guirlet, R., & Bourdelle, C. Fluid simulations of turbulent impurity transport. United States. doi:10.1063/1.2710461.
Dubuit, N., Garbet, X., Parisot, T., Guirlet, R., and Bourdelle, C. Sun . "Fluid simulations of turbulent impurity transport". United States. doi:10.1063/1.2710461.
@article{osti_20974922,
title = {Fluid simulations of turbulent impurity transport},
author = {Dubuit, N. and Garbet, X. and Parisot, T. and Guirlet, R. and Bourdelle, C.},
abstractNote = {Impurity transport in tokamak plasmas is studied with a fluid turbulence code, which has been upgraded to implement two ion species and electrons. The (fixed-flux) simulations are compared to the predictions of a quasilinear model. These simulations mostly agree with quasilinear estimates; they indicate that a turbulent impurity pinch exists. Moreover, this pinch is found to be dominated by curvature terms, as thermodiffusion pinches are found to decrease as 1/Z and observed parallel velocity effects remain weak. The sign of the pinch is also investigated.},
doi = {10.1063/1.2710461},
journal = {Physics of Plasmas},
number = 4,
volume = 14,
place = {United States},
year = {Sun Apr 15 00:00:00 EDT 2007},
month = {Sun Apr 15 00:00:00 EDT 2007}
}