Predictive simulations of toroidal momentum transport at JET

A. Eriksson, H. Nordman, P. Strand, J. Weiland, Tuomas Tala, E. Asp, G. Corrigan, C. Giroud, M. de Greef, I. Jenkins, H.C.M. Knoops, P. Mantica, Karin Rantamäki, P.C. de Vries, K.-D. Zastrow, and JET EFDA Contributors

    Research output: Contribution to journalArticleScientificpeer-review

    13 Citations (Scopus)

    Abstract

    A new version of the Weiland model has been used in predictive JETTO simulations of toroidal rotation. The model includes a self-consistent calculation of the toroidal momentum diffusivity (χphgr) which contains both diagonal and non-diagonal (pinch) contributions to the momentum flux. Predictive transport simulations of JET H-mode, L-mode and hybrid discharges are presented.

    It is shown that experimental temperatures and toroidal velocity were well reproduced by the simulations. The model predicts the ion heat diffusivity (χi) to be larger than the momentum diffusivity and it gives Prandtl numbers (Pr = χphgr/χi) between 0.1 and 1. The Prandtl numbers are often, depending on the plasma conditions, predicted to be significantly smaller than unity. This is in accordance with experimental findings.
    Original languageEnglish
    Pages (from-to)1931-1943
    JournalPlasma Physics and Controlled Fusion
    Volume49
    Issue number11
    DOIs
    Publication statusPublished - 2007
    MoE publication typeA1 Journal article-refereed

    Keywords

    • JET
    • Tokamak
    • plasma toroidal confinement
    • toroidal momentum transport
    • ITER
    • fusion energy
    • fusion reactors
    • plasma

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  • Cite this

    Eriksson, A., Nordman, H., Strand, P., Weiland, J., Tala, T., Asp, E., Corrigan, G., Giroud, C., de Greef, M., Jenkins, I., Knoops, H. C. M., Mantica, P., Rantamäki, K., de Vries, P. C., Zastrow, K-D., & Contributors, A. JET. EFDA. (2007). Predictive simulations of toroidal momentum transport at JET. Plasma Physics and Controlled Fusion, 49(11), 1931-1943. https://doi.org/10.1088/0741-3335/49/11/012