Grounding Rikitake-like conceptual dynamos in mean-field MHD: the derivation and geophysical scaling of the most basic reversal dynamo model
We report the first explicit derivation of the Rikitake dynamo as a direct approximation of mean-field magnetohydrodynamics (MHD), establishing a systematic connection between a classical conceptual reversal model and the governing large-scale field equations. Starting from the mean-field induction and momentum equat...