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| HAL : hal-00386101, version 2 |
| DOI : 10.1016/j.jcp.2009.11.031 |
| Fiche détaillée |  Récupérer au format |
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| Journal of Computational Physics 229, 6 (2010) 2220-2235 |
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| Versions disponibles : | v1 (20-05-2009) | v2 (06-10-2009) |
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| Penalization modeling of a limiter in the Tokamak edge plasma |
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| Livia Isoardi 1Guillaume Chiavassa 1, 2 |
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| (20/03/2010) |
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| An original penalization method is applied to model the interaction of magnetically confined plasma with limiter in the frame of minimal transport model for ionic density and parallel momentum. The limiter is considered as a pure particle sink for the plasma and consequently the density and the momentum are enforced to be zero inside. Comparisons of the numerical results with one dimensional analytical solutions show a very good agreement. In particular, presented method provides a plasma velocity which is almost sonic at the boundaries obstacles as expected from the sheath conditions through the Bohm criterion. The new system being solved in an obstacle free domain, an efficient pseudo-spectral algorithm based on a Fast Fourier transform is also proposed, and associated with an exponential filtering of the unphysical oscillations due to Gibbs phenomenon. Finally, the efficiency of the method is illustrated by investigating the flow spreading from the plasma core to the Scrape Off Layer at the wall in a two-dimensional system with one then two limiters neighboring. |
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| 1 : | Modélisation et Simulation Numérique en Mécanique et Génie des Procédés (MSNMGP) |
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CNRS : UMR6181 – Université de la Méditerranée - Aix-Marseille II – Université de Provence - Aix-Marseille I – Université Paul Cézanne - Aix-Marseille III |
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| 2 : | Ecole Centrale de Marseille (ECM) |
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Ecole Centrale de Marseille |
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| 3 : | Département de Recherche sur la Fusion Contrôlée (DRFC) |
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CEA : DSM/DRFC |
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| Domaine | : | Informatique/Modélisation et simulation Physique/Physique/Physique des plasmas |
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| penalization – limiter – tokamak – Bohm condition – modeling |
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| Liste des fichiers attachés à ce document : | |||||
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| hal-00386101, version 2 | |
| http://hal.archives-ouvertes.fr/hal-00386101 | |
| oai:hal.archives-ouvertes.fr:hal-00386101 | |
| Contributeur : Guillaume Chiavassa | |
| Soumis le : Mardi 6 Octobre 2009, 15:11:18 | |
| Dernière modification le : Mercredi 28 Avril 2010, 10:03:50 | |
