Gyrokinetic simulations of turbulent transport in JET-like plasmas
Paper in proceedings, 2013

In this work turbulent transport in JET-like plasma discharges is analyzed, with main emphasis on impurity transport driven by ITG/TEM modes. Gyrokinetic (GK) simulations are performed using the GENE code, in both quasilinear (QL) and nonlinear (NL) mode,1 and the results are compared with a computationally efficient fluid model. Particle transport is quantified by locally finding density gradients (R/Ln ) that yield zero particle flux, signifying a balance between convective and diffusive transport. The impact of the magnetic equilibrium (circular, s − α and realistic magnetic geometry) on the various models is discussed, as well as the effects of collisionality (in both fluid and GK) and the inclusion of a (2%) Carbon background (in GK), as per JET CFC wall conditions. The effect of sheared toroidal rotation was also investigated and found to be important, although not for the particular JET discharge studied in this work.

Author

Luis Fazendeiro

Chalmers, Earth and Space Sciences, Plasma Physics and Fusion Energy

Andreas Skyman

Chalmers, Earth and Space Sciences, Plasma Physics and Fusion Energy

Daniel Tegnered

Chalmers, Earth and Space Sciences, Plasma Physics and Fusion Energy

Hans Nordman

Chalmers, Earth and Space Sciences, Plasma Physics and Fusion Energy

Pär Strand

Chalmers, Earth and Space Sciences, Plasma Physics and Fusion Energy

Johan Anderson

Chalmers, Applied Physics, Nuclear Engineering

40th EPS Conference on Plasma Physics, EPS 2013; Espoo; Finland; 1 July 2013 through 5 July 2013

Vol. 2 1074-1077

Driving Forces

Sustainable development

Areas of Advance

Energy

Roots

Basic sciences

Infrastructure

C3SE (Chalmers Centre for Computational Science and Engineering)

Subject Categories

Fusion, Plasma and Space Physics

ISBN

978-163266310-8

More information

Created

10/7/2017