Turbulent geodynamo simulations: a leap towards Earth's core

@article{Schaeffer2017TurbulentGS,
  title={Turbulent geodynamo simulations: a leap towards Earth's core},
  author={Nathana{\"e}l Schaeffer and Dominique Jault and H-C Nataf and Alexandre Fournier},
  journal={Geophysical Journal International},
  year={2017},
  volume={211},
  pages={1-29}
}
We present an attempt to reach realistic turbulent regime in direct numerical simulations of the geodynamo. We rely on a sequence of three convection-driven simulations in a rapidly rotating spherical shell. The most extreme case reaches towards the Earth's core regime by lowering viscosity (magnetic Prandtl number Pm=0.1) while maintaining vigorous convection (magnetic Reynolds number Rm>500) and rapid rotation (Ekman number E=1e-7), at the limit of what is feasible on today's supercomputers… 
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