Angular momentum transport modeling

Achievements of a gyrokinetic quasi-linear approach

P Cottier, C Bourdelle, Y Camenen, Ö D Gürcan, F J Casson, X Garbet, P Hennequin, Tuomas Tala

Research output: Contribution to journalArticleScientificpeer-review

12 Citations (Scopus)

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 languageEnglish
Article number015011
JournalPlasma Physics and Controlled Fusion
Volume56
Issue number1
DOIs
Publication statusPublished - 2014
MoE publication typeA1 Journal article-refereed

Fingerprint

Angular momentum
Momentum
angular momentum
momentum
Fluxes
Fusion reactions
fusion
shear
predictions
flux (rate)
Eigenvalues and eigenfunctions
residual stress
heat flux
Residual stresses
eigenvectors
convection
eigenvalues
Experiments
Modulation
Plasmas

Keywords

  • Gyrokinetics
  • momentum transpot
  • QuaLiKiz
  • quasi-linear

Cite this

Cottier, P ; Bourdelle, C ; Camenen, Y ; Gürcan, Ö D ; Casson, F J ; Garbet, X ; Hennequin, P ; Tala, Tuomas. / Angular momentum transport modeling : Achievements of a gyrokinetic quasi-linear approach. In: Plasma Physics and Controlled Fusion. 2014 ; Vol. 56, No. 1.
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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",
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Cottier, P, Bourdelle, C, Camenen, Y, Gürcan, ÖD, Casson, FJ, Garbet, X, Hennequin, P & Tala, T 2014, 'Angular momentum transport modeling: Achievements of a gyrokinetic quasi-linear approach', 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.

In: Plasma Physics and Controlled Fusion, Vol. 56, No. 1, 015011, 2014.

Research output: Contribution to journalArticleScientificpeer-review

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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

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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

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