The turbulent stresses in the theory of the solar torsional oscillations

Details The turbulent stresses in the theory of the solar torsional oscillations The turbulent stresses in the theory of the solar torsional oscillations

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990a%26a...236..503r&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 236, no. 2, Sept. 1990, p. 503-508.

Astronomy and Astrophysics

Astrophysics

18

Solar Magnetic Field, Solar Oscillations, Torsion, Turbulence Effects, Angular Momentum, Feedback, Maxwell Equation, Solar Rotation, Stress Tensors

Scientific paper

The influence of a large-scale magnetic field, (B), on both the Reynolds and turbulent Maxwellian stresses is considered. The second-order correlation approximation is used to determine this general influence on the Maxwellian stress and on the turbulent angular-momentum transport (TMT). The turbulent Maxwellian stress is found to act opposite to the mean-field constituent, hence the general tensor may degenerate for the often discussed (Orszag) turbulence models to a pure diagonal (pressure) form (i.e., the averaged Lorentz force) is conservative. This surprising result provides an alternative to the hitherto sole explanation of the solar torsional oscillation as being Lorentz-force-induced modification of the mean-flow system in the convection zone.

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