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Tractable flux-driven temperature, density, and rotation profile evolution with the quasilinear gyrokinetic transport model QuaLiKiz

J. Citrin ; C. Bourdelle ; F. J. Casson ; C. Angioni ; N. Bonanomi ; Y. Camenen ; X. Garbet ; L. Garzotti ; T. Gorler ; O. Gurcan ; F. Koechl ; F. Imbeaux ; O. Linder ; K. van de Plassche ; Pär Strand (Institutionen för rymd- och geovetenskap, Plasmafysik och fusionsenergi) ; G. Szepesi
Plasma Physics and Controlled Fusion (0741-3335). Vol. 59 (2017), 12,
[Artikel, refereegranskad vetenskaplig]

Quasilinear turbulent transport models are a successful tool for prediction of core tokamak plasma profiles in many regimes. Their success hinges on the reproduction of local nonlinear gyrokinetic fluxes. We focus on significant progress in the quasilinear gyrokinetic transport model QuaLiKiz (Bourdelle et al 2016 Plasma Phys. Control. Fusion 58 014036), which employs an approximated solution of the mode structures to significantly speed up computation time compared to full linear gyrokinetic solvers. Optimisation of the dispersion relation solution algorithm within integrated modelling applications leads to flux calculations x 10(6-7) faster than local nonlinear simulations. This allows tractable simulation of flux-driven dynamic profile evolution including all transport channels: ion and electron heat, main particles, impurities, and momentum. Furthermore, QuaLiKiz now includes the impact of rotation and temperature anisotropy induced poloidal asymmetry on heavy impurity transport, important for W-transport applications. Application within the JETTO integrated modelling code results in 1 s of JET plasma simulation within 10 h using 10 CPUs. Simultaneous predictions of core density, temperature, and toroidal rotation profiles for both JET hybrid and baseline experiments are

Nyckelord: tokamak, turbulence, gyrokinetics, integrated modelling, complex error function, turbulence simulations, gradient mode, aspect, ratio, microstability, computation, barriers, tokamak



Denna post skapades 2017-12-13. Senast ändrad 2018-01-17.
CPL Pubid: 253752

 

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Institutioner (Chalmers)

Institutionen för rymd- och geovetenskap, Plasmafysik och fusionsenergi (2013-2017)

Ämnesområden

Fusion, plasma och rymdfysik

Chalmers infrastruktur

C3SE/SNIC (Chalmers Centre for Computational Science and Engineering)