312 citations · 1.7k across the 36 of their papers we have counts for
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Solenoidal force balances in numerical dynamos
Robert J. Teed, Emmanuel Dormy
Numerical simulations of the geodynamo (and other planetary dynamos) have made significant progress in recent years. As computing power has advanced, some new models claim to be ev…
Three Branches of Dynamo Action
Emmanuel Dormy, Ludivine Oruba, Ludovic Petitdemange
In addition to the weak-dipolar state and to the fluctuating-multipolar state, widely discussed in the literature, a third regime has been identified in Dormy (2016). It correspond…
Strong-Field Spherical Dynamos
Emmanuel Dormy
Numerical models of the geodynamo are usually classified in two categories: those denominated dipolar modes, observed when the inertial term is small enough, and multipolar fluctua…
Transition between viscous dipolar and inertial multipolar dynamos
Ludivine Oruba, Emmanuel Dormy
We investigate the transition from steady dipolar to reversing multipolar dynamos. The Earth has been argued to lie close to this transition, which could offer a scenario for geoma…
Predictive Scaling Laws for Spherical Rotating Dynamos
Ludivine Oruba, Emmanuel Dormy
State of the art numerical models of the Geodynamo are still performed in a parameter regime extremely remote from the values relevant to the physics of the Earth's core. In order…
The dynamo bifurcation in rotating spherical shells
Vincent Morin, Emmanuel Dormy
We investigate the nature of the dynamo bifurcation in a configuration applicable to the Earth's liquid outer core, i.e. in a rotating spherical shell with thermally driven motions…