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Comparison of Edge and Internal Transport Barriers in Drift Wave Predictive Simulations

Jan Weiland (Institutionen för rymd- och geovetenskap, Transportteori) ; K. Crombe ; P. Mantica ; V. Naulin ; T. Tala
AIP Conference Proceedings. Chalmers Workshop on Nonlinear Phenomena in Fusion Plasmas, Villa Monastero, Varenna, 8-10 June 2011 (0094-243X). Vol. 1392 (2011), p. 85-91.
[Konferensbidrag, övrigt]

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.

Nyckelord: transport processes, pinch effect, plasma drift waves, symmetry breaking



Denna post skapades 2011-10-18. Senast ändrad 2015-07-08.
CPL Pubid: 147376

 

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Institutioner (Chalmers)

Institutionen för rymd- och geovetenskap, Transportteori (2010-2012)

Ämnesområden

Fusion, plasma och rymdfysik

Chalmers infrastruktur