Turbulent transport in hydromagnetic flows

Abstract

The predictive power of mean-field theory is emphasized by comparing theory with simulations under controlled conditions. The recently developed test-field method is used to extract turbulent transport coefficients both in kinematic as well as nonlinear and quasi-kinematic cases. A striking example of the quasi-kinematic method is provided by magnetic buoyancy-driven flows that produce an alpha effect and turbulent diffusion.

17 pages, 6 figures, topical issue of Physica Scripta on turbulent mixing and beyond

References in corpus (17)

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• The case for a distributed solar dynamo shaped by near-surface shear
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• Alpha effect and diffusivity in helical turbulence with shear
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• Kinetic and magnetic alpha effects in nonlinear dynamo theory
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