Fig. 2
From: The competition between Lorentz and Coriolis forces in planetary dynamos
a–d Direct calculations and parameterizations of the Lorentz to Coriolis force ratio in our simulations. Lorentz to Coriolis force ratios as a function of Rayleigh number for five Ekman numbers and five magnetic Prandtl numbers. The modified dynamic Elsasser number includes the length scale pre-factor: \(\Lambda _{d}^{*} = 0.77 \Lambda _{i} Rm^{-1/2}\). The Rayleigh numbers corresponding to \({Ro}_{c}=\sqrt {Ra E^{2}/Pr}=1\) are denoted on the top axes