### Abstract

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 |

### Fingerprint

### Keywords

- Gyrokinetics
- momentum transpot
- QuaLiKiz
- quasi-linear

### Cite this

*Plasma Physics and Controlled Fusion*,

*56*(1), [015011]. https://doi.org/10.1088/0741-3335/56/1/015011

}

*Plasma Physics and Controlled Fusion*, vol. 56, no. 1, 015011. https://doi.org/10.1088/0741-3335/56/1/015011

**Angular momentum transport modeling : Achievements of a gyrokinetic quasi-linear approach.** / Cottier, P; Bourdelle, C; Camenen, Y; Gürcan, Ö D; Casson, F J; Garbet, X; Hennequin, P; Tala, Tuomas.

Research output: Contribution to journal › Article › Scientific › peer-review

TY - JOUR

T1 - Angular momentum transport modeling

T2 - Achievements of a gyrokinetic quasi-linear approach

AU - Cottier, P

AU - Bourdelle, C

AU - Camenen, Y

AU - Gürcan, Ö D

AU - Casson, F J

AU - Garbet, X

AU - Hennequin, P

AU - Tala, Tuomas

PY - 2014

Y1 - 2014

N2 - 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

AB - 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

KW - Gyrokinetics

KW - momentum transpot

KW - QuaLiKiz

KW - quasi-linear

U2 - 10.1088/0741-3335/56/1/015011

DO - 10.1088/0741-3335/56/1/015011

M3 - Article

VL - 56

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

SN - 0741-3335

IS - 1

M1 - 015011

ER -