On cubic non-linearities in fluid and kinetic models

Autor: D Villa, X Garbet, N Dubuit, O Agullo

Publikováno v: Journal of Physics: Conference Series. 2397:012005

The kinetic origin of the cubic terms found in electromagnetic reduced fluid models of magnetized plasmas is identified and analyzed. The transition from cartesian to guiding center variables in kinetic systems is responsible for the introduction of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cef4b5cc41d92718af483dec0a872a71
https://doi.org/10.1088/1742-6596/2397/1/012005

Nonlinear dynamics of turbulence driven magnetic islands. II. Numerical simulations

Autor: N. Dubuit, Xavier Garbet, M. Muraglia, Alexandre Poyé, Sadruddin Benkadda, Olivier Agullo, Abhijit Sen

Publikováno v: Physics of Plasmas
Physics of Plasmas, American Institute of Physics, 2017, 24 (4), ⟨10.1063/1.4981230⟩
Physics of Plasmas, American Institute of Physics, 2017, 24, pp.42309-42309
Physics of Plasmas, 2017, 24 (4), ⟨10.1063/1.4981230⟩
Physics of Plasmas, 2017, 24, pp.42309-42309

International audience; The nonlinear dynamics of a turbulence driven magnetic island (TDMI) is investigated numerically in a reduced magnetohydrodynamic fluid model. The significance of identifying a characteristic signature of a TDMI for its experi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::304bf7343d4a2c66a34056465f276240
https://hal.archives-ouvertes.fr/hal-01795677

Generation of a magnetic island by edge turbulence in tokamak plasmas

Autor: Sadruddin Benkadda, Alexandre Poyé, Xavier Garbet, Abhijit Sen, N. Dubuit, Olivier Agullo, M. Muraglia

Publikováno v: Physics of Plasmas
Physics of Plasmas, American Institute of Physics, 2015, 22 (3), ⟨10.1063/1.4916580⟩
Physics of Plasmas, 2015, 22 (3), ⟨10.1063/1.4916580⟩

International audience; We investigate, through extensive 3D magneto-hydro-dynamics numerical ă simulations, the nonlinear excitation of a large scale magnetic island ă and its dynamical properties due to the presence of small-scale ă turbulence.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a949d98a4a367f306bee15e90a69f12d
https://hal.archives-ouvertes.fr/hal-01465045

Self-Consistent Dynamics of Impurities in Magnetically Confined Plasmas: Turbulence Intermittency and Nondiffusive Transport

Autor: N. Dubuit, Shimpei Futatani, Xavier Garbet, Sadruddin Benkadda, Diego del-Castillo-Negrete

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)

Self-consistent turbulent transport of high-concentration impurities in magnetically confined fusion plasmas is studied using a three-dimensional nonlinear fluid global turbulence model which includes ion-temperature gradient and trapped electron mod

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::601b2926e793b4ea2b856c4e6a933e4e
https://doi.org/10.1103/physrevlett.109.185005

Reversal of impurity pinch velocity in tokamaks plasma with a reversed magnetic shear configuration

Autor: S. Benkadda, Xavier Garbet, N. Dubuit, Shimpei Futatani

Publikováno v: Physical review letters. 104(1)

Impurity transport in tokamak core plasmas is investigated with a three-dimensional fluid global code. It is shown that, in the presence of an internal transport barrier (ITB) created by a reversed magnetic shear configuration, one can obtain a rever

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::436faebcd1c52ce58afe1b1f21ea04ad
https://pubmed.ncbi.nlm.nih.gov/20366368