Suppression of cross-field turbulent transport of passive scalar concentration in two dimensional magnetohydrodynamics

P. H. Diamond, A. V. Gruzinov

    Research output: Contribution to journalArticle

    Abstract

    A theory of the cross-field turbulent transport of a passive scalar in a magnetized, two dimensional, electrically conducting fluid is presented. Both a renormalized quasilinear calculation and analyses of an exactly solvable simple model demonstrate that weak magnetic fields in a highly conducting medium are capable of strongly suppressing the turbulent cross-field transport by alteration of the Lagrangian correlation time of a scalar fluid element, without effect on the turbulence intensity. Passive scalar transport along the magnetic field is unchanged. An explicit expression for the effective cross-field diffusivity is given.

    Original languageEnglish (US)
    Pages (from-to)3306-3309
    Number of pages4
    JournalPhysical Review Letters
    Volume78
    Issue number17
    StatePublished - 1997

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    magnetohydrodynamics
    retarding
    scalars
    conducting fluids
    magnetic fields
    diffusivity
    conductors
    turbulence
    fluids

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Suppression of cross-field turbulent transport of passive scalar concentration in two dimensional magnetohydrodynamics. / Diamond, P. H.; Gruzinov, A. V.

    In: Physical Review Letters, Vol. 78, No. 17, 1997, p. 3306-3309.

    Research output: Contribution to journalArticle

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