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作者:Y. Sarazin , V. Grandgirard ...
来源:[J].Computer Physics Communications(IF 3.078), 2018
摘要:Abstract(#br)A linearized multi-species collision operator valid for arbitrary masses and charges has been developed and implemented in the gyrokinetic code GYSELA (Grandgirard et al., 2016). This operator has all the required properties : it conserves particles, total momen...
作者:Y. Sarazin , E. Sonnendrücker ...
来源:[J].Computer Physics Communications(IF 3.078), 2016, Vol.207, pp.35-68
摘要:Abstract(#br)This paper addresses non-linear gyrokinetic simulations of ion temperature gradient (ITG) turbulence in tokamak plasmas. The electrostatic Gysela code is one of the few international 5D gyrokinetic codes able to perform global, full- f and flux-driven simulations. It...
作者:Y. Sarazin , Ph. Ghendrih ...
来源:[J].Journal of Nuclear Materials(IF 1.211), 2003, Vol.313, pp.796-803
摘要:Abstract(#br)Turbulence in the scrape-off layer (SOL) is investigated using a 2D fluid model for the interchange instability as a paradigm. A constant driving flux governs the dynamics of both the equilibrium and fluctuating parts of the density and electric potential. The t...
作者:Y. Sarazin , Ph. Ghendrih
来源:[J].Journal of Nuclear Materials(IF 1.211), 1997, Vol.241, pp.322-327
摘要:Abstract(#br)The turbulent particle transport is analyzed as a self-organized system driven by ionization. The region characterized by a gradient comparable to the critical gradient is found to extend over three times the neutral penetration depth. As observed in experiments, the...
作者:Y. Sarazin , C. Chandre ...
来源:[J].Journal of Nuclear Materials(IF 1.211), 2007, Vol.363-365, pp.550-554
摘要:Abstract(#br)The E × B drift motion of charged test particle dynamics in the Scrape-Off-Layer (SOL) is analyzed to investigate a transport control strategy based on Hamiltonian dynamics. We model SOL turbulence using a 2D non-linear fluid code based on interchange instabil...
作者:Y. Sarazin , G. Ciraolo ...
来源:[J].Journal of Nuclear Materials(IF 1.211), 2007, Vol.363-365, pp.581-585
摘要:Abstract(#br)Turbulence spreading, namely turbulent transport extending into a stable region is reported both for the flat density profiles in the far SOL and into a modeled H-mode barrier. It is shown that due to turbulence penetration, the pedestal width fluctuates and that its...
作者:Y. Sarazin , X. Garbet ...
来源:[J].Journal of Nuclear Materials(IF 1.211), 2009, Vol.390, pp.347-350
摘要:Abstract(#br)The issue of parallel flows asymmetries in the edge plasma is tackled with a new first principle transport and turbulence code. TOKAM-3D is a 3D full-torus fluid code that can be used both in diffusive and turbulent regimes and covers either exclusively closed flux s...
作者:... Ph. Ghendrih , Y. Sarazin , P. Tamain
来源:[J].Journal of Nuclear Materials(IF 1.211), 2011, Vol.415 (1), pp.S579-S583
摘要:Abstract(#br)Isoardi et al. [1] recently proposed a penalization technique to model solid plasma facing components that treats a solid obstacle as a sink region corresponding to the strong plasma recombination in the solid state material. A major advantage of this approach i...
作者:Y. Sarazin , E. Serre
来源:[J].Journal of Nuclear Materials(IF 1.211), 2011, Vol.415 (1), pp.S601-S604
摘要:Abstract(#br)The transition between the core and scrape-off layer of a tokamak corresponds to a marked momentum shear layer, owing to sheath acceleration on limiters which drives near-sonic flows along the plasma magnetic field in the scrape-off layer, and a parallel shear f...
作者:Y. Sarazin , M. Bécoulet ...
来源:[J].Journal of Nuclear Materials(IF 1.211), 2003, Vol.313, pp.914-918
摘要:Abstract(#br)Numerical analysis of the images in visible light from the JET tangential camera show that the edge localised mode (ELM) events are characterised by impacts on the low-field side components. The increase of emission is not restricted to the components closest to the ...

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