Small-scale magnetic fields in turbulence - Saffman's approximation revisited

Details Small-scale magnetic fields in turbulence - Saffman's approximation revisited Small-scale magnetic fields in turbulence - Saffman's approximation revisited

Aug 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980jfm....99..481b&link_type=abstract

Journal of Fluid Mechanics, vol. 99, Aug. 14, 1980, p. 481-493.

Astronomy and Astrophysics

Astrophysics

Astrophysics, Conducting Fluids, Magnetic Fields, Turbulent Flow, Autocorrelation, Differential Equations, Kinematics, Tensor Analysis, Viscous Flow

Scientific paper

The approximation developed by Saffman (1963) to describe the small-scale structure of a magnetic field in a turbulent conducting medium and its evolution in time is examined with a view to placing sharper limits on the numerical parameters that appear in the approximate correlation functions. It is shown that if magnetic dissipation is ignored entirely, then results for a magnetic field in two dimensions are consistent with Saffman's approximation, but in three dimensions no steady state could be found.

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