The Size and Dynamics of Magnetic Ux Structures in Magnetohydrodynamic Turbulence
نویسنده
چکیده
The structures in magnetohydrodynamic (MHD) ow, ux tubes in particular, are investigated with respect to coherence in the direction of the magnetic eld. A length scale, which is interpreted as the diameter of the tubes, is derived from the MHD equations. This scale implies that the tendency towards alignment of ux lines in tubes is a diiusion driven phenomenon. The dynamics of the tubes is also investigated; the major conclusion is that stronger tubes are expected to be straighter. These ideas are tested out on data from numerical simulations of turbulent MHD convection. It is also seen that alignment of ux lines increases with the strength of the tube. Possible reasons for this eeect are discussed.
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