Conservative global gyrokinetic toroidal full-f five-dimensional Vlasov simulation

Idomura, Yasuhiro; Ida, Masato; Kano, Takuma; Aiba, N.; Tokuda, S.

doi:10.1016/j.cpc.2008.04.005

Cited by 106 publications

(107 citation statements)

References 48 publications

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“…As for the case of E × B shearing, this poloidal tilt implies parallel symmetry breaking and momentum transport. The effect of profile shearing on momentum transport has been studied in the linear regime with the global gyro-kinetic code GT5D [79] as well as nonlinearly with GYRO simulations [76,80]. The resulting momentum flux can be large C * /χ φ ≈ 1 for 1/ρ * = 150, and changes sign at the ITG/TEM transition [75].…”

Section: Higher Order ρ * Termsmentioning

confidence: 99%

Overview of toroidal momentum transport

Angioni²,

et al. 2011

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Toroidal momentum transport mechanisms are reviewed and put in a broader perspective. The generation of a finite momentum flux is closely related to the breaking of symmetry (parity) along the field. The symmetry argument allows for the systematic identification of possible transport mechanisms. Those that appear to lowest order in the normalized Larmor radius (the diagonal part, Coriolis pinch, E ×B shearing, particle flux, and up-down asymmetric equilibria) are reasonably well understood. At higher order, expected to be of importance in the plasma edge, the theory is still under development.

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Section: Higher Order ρ * Termsmentioning

confidence: 99%

Overview of toroidal momentum transport

Angioni²,

et al. 2011

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“…GT5D has been benchmarked [16,19] against the global PIC code GT3D [23] for collisionless ITG turbulence, and against the global PIC code FORTEC-3D [24] for neoclassical physics.…”

Section: The Gt5d Codementioning

confidence: 99%

“…The parallelized field-aligned solver developed in this work performs well (solve time of the order of a few seconds for a ITER-like plasma). [16] for the physical and numerical parameters) by using either θ or θ * as the poloidal coordinate and by varying ∆m. Instantaneous growth rates for χ = θ and χ = θ * are displayed on Fig.…”

Section: Choice Of ∆Mmentioning

confidence: 99%

Parallel filtering in global gyrokinetic simulations

Jolliet

McMillan

Villard

et al. 2012

Journal of Computational Physics

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“…We note here that there are other full-f gyrokinetic codes under development for core plasma studies. [7][8][9] The rest of this paper is organized as follows. In Sec.…”

Section: Introductionmentioning

confidence: 99%

Compressed ion temperature gradient turbulence in diverted tokamak edge

Chang

Diamond

et al. 2009

Physics of Plasmas

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It is found from a heat-flux-driven full-f gyrokinetic particle simulation that there is ion temperature gradient ͑ITG͒ turbulence across an entire L-mode-like edge density pedestal in a diverted tokamak plasma in which the ion temperature gradient is mild without a pedestal structure, hence the normalized ion temperature gradient parameter i = ͑d log T i / dr͒ / ͑d log n / dr͒ varies strongly from high ͑Ͼ4 at density pedestal top/shoulder͒ to low ͑Ͻ2 in the density slope͒ values. Variation of density and i is in the same scale as the turbulence correlation length, compressing the turbulence in the density slope region. The resulting ion thermal flux is on the order of experimentally inferred values. The present study strongly suggests that a localized estimate of the ITG-driven i will not be valid due to the nonlocal dynamics of the compressed turbulence in an L-mode-type density slope. While the thermal transport and the temperature profile saturate quickly, the E ϫ B rotation shows a longer time damping during the turbulence. In addition, a radially in-out mean potential variation is observed.

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Conservative global gyrokinetic toroidal full-f five-dimensional Vlasov simulation

Cited by 106 publications

References 48 publications

Overview of toroidal momentum transport

Overview of toroidal momentum transport

Parallel filtering in global gyrokinetic simulations

Compressed ion temperature gradient turbulence in diverted tokamak edge

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