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

研究成果: Contribution to journalArticle

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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.

元の言語英語
記事番号034502
ジャーナルjournal of the physical society of japan
81
発行部数3
DOI
出版物ステータス出版済み - 3 2012

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Sugita, S., Beyer, P., Fuhr, G., Benkadda, S., Garbet, X., Yagi, M., Itoh, S. I., & Itoh, K. (2012). Three-dimensional turbulence simulation of edge transport and impact of plasma rotation. journal of the physical society of japan, 81(3), [034502]. https://doi.org/10.1143/JPSJ.81.034502