Magnetic Taylor-Proudman Constraint Explains Flows into the Tangent Cylinder

Alban Potherat; Kelig Aujogue; Francois Debray

Magnetic Taylor-Proudman Constraint Explains Flows into the Tangent Cylinder

Alban Potherat, Kelig Aujogue, Francois Debray

Research Centre for Fluid and Complex Systems

Laboratoire National des Champs Magnétiques Intenses

Research output: Contribution to journal › Article › peer-review

Abstract

Tangent Cylinders (TCs) have shaped our understanding of planetary dynamos and liquid cores. the Taylor-Proudman Constraint (TPC) due to planetary rotation creates these imaginary surfaces separating polar and equatorial regions but cannot explain the flows meandering through them. Here we establish and verify experimentally that magnetic fields aligned with rotation drive flows into TCs, linked to the flows along TCs by a magnetic Taylor-Proudman constraint. This constraint explains and quantifies how magnetic fields reshape rotating flows in planetary interiors and magnetorotating flows in general.

Original language	English
Pages (from-to)	(In-Press)
Number of pages	8
Journal	Physical Review Letters
Volume	(In-Press)
Publication status	Accepted/In press - 25 Jul 2024

Funder

The authors are grateful to the European Magnetic Field Laboratory (EMFL) and the Laboratoire des Champs Magn´ etiques Intense-Grenoble (CNRS) for support and access to unique magnets with high magnetic f ield in sufficiently large bores to conduct fluid mechanics experiments. Subscription to EMFL is funded by EPSRCgrant no. NS/A000060/1. This work was supported by Leverhulme Trust grants no. RPG-2012-456 and no. RPG-2017-366, and EPSRC grant no. EP/X010937/1. No Artificial Intelligence technology was used in this work, besides spell-checking.

Cite this

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abstract = "Tangent Cylinders (TCs) have shaped our understanding of planetary dynamos and liquid cores. the Taylor-Proudman Constraint (TPC) due to planetary rotation creates these imaginary surfaces separating polar and equatorial regions but cannot explain the flows meandering through them. Here we establish and verify experimentally that magnetic fields aligned with rotation drive flows into TCs, linked to the flows along TCs by a magnetic Taylor-Proudman constraint. This constraint explains and quantifies how magnetic fields reshape rotating flows in planetary interiors and magnetorotating flows in general.",

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AU - Debray, Francois

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N2 - Tangent Cylinders (TCs) have shaped our understanding of planetary dynamos and liquid cores. the Taylor-Proudman Constraint (TPC) due to planetary rotation creates these imaginary surfaces separating polar and equatorial regions but cannot explain the flows meandering through them. Here we establish and verify experimentally that magnetic fields aligned with rotation drive flows into TCs, linked to the flows along TCs by a magnetic Taylor-Proudman constraint. This constraint explains and quantifies how magnetic fields reshape rotating flows in planetary interiors and magnetorotating flows in general.

AB - Tangent Cylinders (TCs) have shaped our understanding of planetary dynamos and liquid cores. the Taylor-Proudman Constraint (TPC) due to planetary rotation creates these imaginary surfaces separating polar and equatorial regions but cannot explain the flows meandering through them. Here we establish and verify experimentally that magnetic fields aligned with rotation drive flows into TCs, linked to the flows along TCs by a magnetic Taylor-Proudman constraint. This constraint explains and quantifies how magnetic fields reshape rotating flows in planetary interiors and magnetorotating flows in general.

UR - https://arxiv.org/pdf/2312.08840v3

M3 - Article

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Magnetic Taylor-Proudman Constraint Explains Flows into the Tangent Cylinder

Abstract

Funder

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