A systematic route to subcritical dynamo branches
Fluid Dynamics
2022-07-20 v2
Abstract
We demonstrate that the nonlinear optimisation of a finite-amplitude disturbance over a freely evolving and possibly even turbulent flow, can successfully identify subcritical dynamo branches as well as the structure and amplitude of their critical perturbations. As this approach does not require prior knowledge of the magnetic field amplification mechanisms, it opens a new avenue for systematically probing subcritical dynamo flows.
Keywords
Cite
@article{arxiv.2112.11376,
title = {A systematic route to subcritical dynamo branches},
author = {Paul M. Mannix and Yannick Ponty and Florence Marcotte},
journal= {arXiv preprint arXiv:2112.11376},
year = {2022}
}