Consistency of the alpha-effect turbulent dynamo

Details Consistency of the alpha-effect turbulent dynamo Consistency of the alpha-effect turbulent dynamo

Jun 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979phrvl..42.1677k&link_type=abstract

Physical Review Letters, vol. 42, June 18, 1979, p. 1677-1680.

Physics

22

Boundary Layers, Conducting Fluids, Magnetic Fields, Magnetohydrodynamic Waves, Turbulence Effects, Wave Propagation, Electric Current, Electrical Resistivity, Lorentz Force, Statistical Distributions

Scientific paper

The paradox of the infinite-conductivity alpha-effect dynamo is resolved by proper treatment of the boundary layer. If the turbulence is not too intermittent, the expansion of the mean electromotive force in powers of the wave number of the mean magnetic field is found to converge and the usual truncation gives little error. The alpha-effect is demonstrated in the strong-field limit where the turbulence consists of Alfven waves propagating along the mean magnetic field.

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