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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    author = "P Cottier and C Bourdelle and Y Camenen and G{\"u}rcan, {{\"O} D} and Casson, {F J} and X Garbet and P Hennequin and Tuomas Tala",
    year = "2014",
    doi = "10.1088/0741-3335/56/1/015011",
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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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    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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