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Little Earth Experiment: An instrument to model planetary cores

Aujogue, Kelig and Potherat, Alban and Bates, Ian and Debray, Francois and Sreenivasan, Binod (2016) Little Earth Experiment: An instrument to model planetary cores. In: REVIEW OF SCIENTIFIC INSTRUMENTS, 87 (8).

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Official URL: http://dx.doi.org/10.1063/1.4960124

Abstract

In this paper, we present a new experimental facility, Little Earth Experiment, designed to study the hydrodynamics of liquid planetary cores. The main novelty of this apparatus is that a transparent electrically conducting electrolyte is subject to extremely high magnetic fields (up to 10 T) to produce electromagnetic effects comparable to those produced by moderate magnetic fields in planetary cores. This technique makes it possible to visualise for the first time the coupling between the principal forces in a convection-driven dynamo by means of Particle Image Velocimetry (PIV) in a geometry relevant to planets. We first present the technology that enables us to generate these forces and implement PIV in a high magnetic field environment. We then show that the magnetic field drastically changes the structure of convective plumes in a configuration relevant to the tangent cylinder region of the Earth's core. Published by AIP Publishing.

Item Type: Journal Article
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Additional Information: Copy right for this article belongs to the AMER INST PHYSICS, 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA
Department/Centre: Division of Earth and Environmental Sciences > Centre for Earth Sciences
Date Deposited: 28 Oct 2016 07:23
Last Modified: 28 Oct 2016 07:23
URI: http://eprints.iisc.ernet.in/id/eprint/55166

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