Transport of parallel momentum by collisionless drift wave turbulence

P.H. Diamond (Invited author), C.J. McDevitt (Invited author), O.E. Gurcan (Invited author), T.S. Hahm (Invited author), Volker Naulin (Invited author)

    Research output: Contribution to journalConference articleResearchpeer-review

    Abstract


    This paper presents a novel, unified approach to the theory of turbulent transport of parallel momentum by collisionless drift waves. The physics of resonant and non‐resonant off‐diagonal contributions to the momentum flux is emphasized, and collisionless momentum exchange between waves and particles is accounted for. Two related momentum conservation theorems are derived. These relate the resonant particle momentum flux, the wave momentum flux and the refractive force. A perturbative calculation, in the spirit of Chapman‐Enskog theory, is used to obtain the wave momentum flux, which contributes significantly to the residual stress. A general equation for mean κ(〈κ〉) is derived and used to develop a generalized theory of symmetry breaking. The resonant particle momentum flux is calculated, and pinch and residual stress effects are identified. The implications of the theory for intrinsic rotation and momentum transport bifurcations are discussed.

    © 2008 American Institute of Physics

    Original languageEnglish
    JournalAip Conference Proceedings
    Volume1013
    Pages (from-to)76-105
    ISSN0094-243X
    DOIs
    Publication statusPublished - 2008
    Event1st ITER international Summer School - Aix-en-Provence, France
    Duration: 16 Jul 200820 Jul 2008
    Conference number: 1
    http://www.iter.org/newsline/12/1031

    Conference

    Conference1st ITER international Summer School
    Number1
    CountryFrance
    CityAix-en-Provence
    Period16/07/200820/07/2008
    Internet address

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