Modelling SOL flow pattern spreading in the edge plasma

Livia Isoardi 1 Guido Ciraolo 1 Guillaume Chiavassa 1 Pierre Haldenwang 1 Eric Serre 1 Philippe Ghendrih 2 Yanick Sarazin 2 Frédéric Schwander 1, 2 Xavier Garbet 2 Patrick Tamain 2
1 M2P2 - Laboratoire de Mécanique, Modélisation et Procédés Propres
2 IRFM - Institut de Recherche sur la Fusion par confinement Magnétique
Abstract : The transition region between closed and open magnetic flux surfaces plays a crucial role for tokamak performances. Appropriate understanding of the edge region remains a major challenge owing to several open issues as momentum transport, turbulence overshoot or neutral penetration. We consider here a transport model system to investigate the propagation of parallel momentum from the SOL into the core plasma and vice-versa. The numerical results show that for small values of the radial diffusion coefficient, the density profile decays exponentially from the core to the SOL as predicted by 1D analytical solution. A spreading of the parallel momentum from the SOL to the core is observed, with the presence of non-zero velocities also in the regions far from the SOL. The effect of an imposed rotation of the core plasma is investigated as well as the dynamics of an overdensity imposed in the core plasma.
Type de document :
Article dans une revue
Journal of Nuclear Materials, Elsevier, 2009, 390-391, pp.388-391. 〈10.1016/j.jnucmat.2009.01.088〉
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https://hal.archives-ouvertes.fr/hal-00848559
Contributeur : Elena Rosu <>
Soumis le : vendredi 26 juillet 2013 - 14:31:23
Dernière modification le : lundi 1 octobre 2018 - 16:03:20

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M2P2 | EC-MARSEILLE | UNIV-AMU | CEA | DSM-IRFM | CEA-DRF | CEA-CAD

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Livia Isoardi, Guido Ciraolo, Guillaume Chiavassa, Pierre Haldenwang, Eric Serre, et al.. Modelling SOL flow pattern spreading in the edge plasma. Journal of Nuclear Materials, Elsevier, 2009, 390-391, pp.388-391. 〈10.1016/j.jnucmat.2009.01.088〉. 〈hal-00848559〉

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