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Updated: Jun 26, 2026
06:42
Magnetically Induced Rotating Rayleigh-Taylor Instability
Published on: March 3, 2017
Boundary layer control of rotating convection systems
Eric M King1, Stephan Stellmach, Jerome Noir
1Department of Earth and Space Sciences, University of California, Los Angeles, California 90095-1567, USA. eric.king@ucla.edu
Nature
|January 17, 2009
Summary
Rotation
Area of Science:
- Geophysics
- Astrophysics
- Fluid Dynamics
Background:
- Turbulent rotating convection influences planetary and stellar features like magnetic fields and heat flux.
- Previous understanding suggested rotation's effect on convection depends on Coriolis and buoyancy forces.
Purpose of the Study:
- To investigate the transition between rotationally dominated and non-rotating turbulent convection.
- To identify the key factors controlling this transition, challenging existing force-balance theories.
Main Methods:
- Conducted laboratory experiments.
- Performed numerical simulations.
- Analyzed transitions based on boundary layer thicknesses.
Main Results:
- The transition is not governed by the global Coriolis-to-buoyancy force ratio.
- Instead, the relative thicknesses of thermal and Ekman boundary layers dictate the transition.
Conclusions:
- A new predictive theory for the transition is formulated based on boundary layer competition.
- This theory unifies previous experimental results and applies broadly to natural convection systems.
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