Three-dimensional turbulence simulation of edge transport and impact of plasma rotation

Satoru Sugita, Peter Beyer, Guillaume Fuhr, Sadruddin Benkadda, Xavier Garbet, Masatoshi Yagi, Sanae I. Itoh, Kimitaka Itoh

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1 Citation (Scopus)

Abstract

Global simulations of edge plasma turbulence are studied. The gradient-flux relation is fitted to a model with two parameters: stiffness and intercept. The slope of the grad-p vs flux curve is clearly lower in the case of spontaneous rotation than in the case of artificially suppressed rotation. The causes of this difference are studied by imposing a specified velocity shear. The slopes are similar between cases of controlled rotation with different amplitudes. That is, the stiffness does not change significantly, while the intercept changes. Therefore, the change in the slope observed in the case of spontaneous rotation has to be attributed to the fact that the velocity shear amplitude itself is increasing with the pressure source. The increase in the velocity shear is conjectured to cause a change in the intercept in the case of spontaneous rotation, but not a change in the stiffness.

Original languageEnglish
Article number034502
Journaljournal of the physical society of japan
Volume81
Issue number3
DOIs
Publication statusPublished - Mar 2012

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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