Comparison of Edge and Internal Transport Barriers in Drift Wave Predictive Simulations
Konferensbidrag (offentliggjort, men ej förlagsutgivet), 2011

We have simulated the formation of an internal transport barrier on JET including a self-consistent treatment of ion and electron temperatures and poloidal and toroidal momentum. Similar simulations of edge transport barriers, including the L-H transition have also been made. However, here only polodal momentum and the temperatures were simulated. The internal barrier included an anomalous spinup of poloidal momentum similar to that in the experiment. Also the edge barrier was accompanied by a spinup of poloidal momentum. The experimental density (with no barrier) was used and kept fixed for the internal barrier. For the edge barrier the edge density was varied and it turned out that a lower edge density gave a stronger barrier. Electromagnetic and nonlocal effects were important for both types of barriers.

plasma drift waves

pinch effect

transport processes

symmetry breaking


Jan Weiland

Chalmers, Rymd- och geovetenskap, Transportteori

K. Crombe

Universiteit Gent

P. Mantica

Consiglio Nazionale delle Ricerche

V. Naulin

Danmarks Tekniske Universitet (DTU)

T. Tala

VTT Technical Research Centre of Finland

AIP Conference Proceedings

0094-243X (ISSN) 1551-7616 (eISSN)

Vol. 1392 85-91


Fusion, plasma och rymdfysik