### Abstract

QuaLiKiz, a model based on a local gyrokinetic eigenvalue
solver (Bourdelle et al 2002 Nucl. Fusion 42 892-902) is
expanded to include momentum flux modeling in addition to
heat and particle fluxes (Bourdelle et al 2007 Phys.
Plasmas 14 112501, Casati et al 2009 Nucl. Fusion 49
085012). Essential for accurate momentum flux
predictions, the parallel asymmetrization of the
eigenfunctions is successfully recovered by an analytical
fluid model. This is tested against self-consistent
gyrokinetic calculations and allows for a correct
prediction of the E * B shear impact on the saturated
potential amplitude by means of a mixing length rule.
Hence, the effect of the E * B shear is recovered on all
the transport channels including the induced residual
stress. Including these additions, QuaLiKiz remains ~10
000 faster than non-linear gyrokinetic codes allowing for
comparisons with experiments without resorting to high
performance computing. The example is given of momentum
pinch calculations in NBI modulation experiments (Tala et
al 2009 Phys. Rev. Lett. 102 075001) for which the inward
convection of the momentum is correctly predicted

Original language | English |
---|---|

Article number | 015011 |

Journal | Plasma Physics and Controlled Fusion |

Volume | 56 |

Issue number | 1 |

DOIs | |

Publication status | Published - 2014 |

MoE publication type | A1 Journal article-refereed |

### Keywords

- Gyrokinetics
- momentum transpot
- QuaLiKiz
- quasi-linear

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## Cite this

Cottier, P., Bourdelle, C., Camenen, Y., Gürcan, Ö. D., Casson, F. J., Garbet, X., Hennequin, P., & Tala, T. (2014). Angular momentum transport modeling: Achievements of a gyrokinetic quasi-linear approach.

*Plasma Physics and Controlled Fusion*,*56*(1), [015011]. https://doi.org/10.1088/0741-3335/56/1/015011