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Abstract:
The influence of anisotropic diffusive coefficients on the stability of the horizontal fluid planar layer, rotating about vertical axis, and permeated by a horizontal homogeneous magnetic field is studied. The linear stability analysis is performed using the separable solutions in the form of horizontal rolls. The onset of overstable motions is examined [1] as well as of stationary ones. The weakly nonlinear behaviour of the convective motions in the vicinity of primary instability threshold is studied. The efficiency to transport heat is compared between overstable and stationary modes.
References:
[1] T. Šoltis, J. Brestenský, (2009), Rotating magnetoconvection with anisotropic diffusivities in the Earth’s core, Physics of the Earth and Planetary Interiors, 178, 27-38.
