Gyrokinetic simulations of turbulent transport in JET-like plasmas
Paper i proceeding, 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.

Författare

Luis Fazendeiro

Chalmers, Rymd- och geovetenskap, Plasmafysik och fusionsenergi

Andreas Skyman

Chalmers, Rymd- och geovetenskap, Plasmafysik och fusionsenergi

Daniel Tegnered

Chalmers, Rymd- och geovetenskap, Plasmafysik och fusionsenergi

Hans Nordman

Chalmers, Rymd- och geovetenskap, Plasmafysik och fusionsenergi

Pär Strand

Chalmers, Rymd- och geovetenskap, Plasmafysik och fusionsenergi

Johan Anderson

Chalmers, Teknisk fysik, Nukleär teknik

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

Vol. 2 1074-1077

Drivkrafter

Hållbar utveckling

Styrkeområden

Energi

Fundament

Grundläggande vetenskaper

Infrastruktur

C3SE (Chalmers Centre for Computational Science and Engineering)

Ämneskategorier

Fusion, plasma och rymdfysik

ISBN

978-163266310-8