Tests of diffusion-free scaling behaviors in numerical dynamo datasets

摘要: Abstract Many dynamo studies extrapolate numerical model results to planetary conditions by empirically constructing scaling laws. The seminal work of Christensen and Aubert (2006) proposed a set laws that have been used throughout the geoscience community. These scalings make use specially-constructed parameters are independent fluid diffusivities, anticipating large-scale turbulent processes will dominate physics in settings. With these ‘diffusion-free’ parameterizations, current models directly fully-turbulent core systems; effects realistic properties merit no further investigation. In this study, we test validity diffusion-free heat transfer arguments their applicability conditions. We do so synthetic datasets examining alongside those . find compress stretch data, eliminating information creating an artificial alignment data. Most significantly, found be unrelated bulk turbulence instead controlled onset non-magnetic rotating convection, itself determined viscous diffusivity working fluid. Ultimately, our results, conjunction with Stelzer Jackson (2013) King Buffett , show not validated current-day cannot yet extrapolated