[Expériences sur la convection doublement diffusive]
La convection doublement diffusive est une forme de convection qui a été étudiée dans le passé surtout pour son application océanographique et qui reçoit de plus en plus d’attention dans le contexte de la convection dans les noyaux planétaires. Cette revue est consacrée aux mesures des propriétés de transport de la convection doublement diffusive qui ont été effectuées dans deux types d’expériences : soit l’expérience démarre de deux couches séparées par une discontinuité, soit elle étudie la convection à l’intérieur de gradients uniformes. Les expériences les plus récentes ont été réalisées dans le régime des doigts de salinité dans lequel la composante qui diffuse lentement entraîne le mouvement alors que la composante qui diffuse rapidement stabilise le fluide et cette revue se concentre sur cette configuration.
Double diffusive convection is a form of convection that was studied in the past mostly for its application in oceanography and which receives increasing attention in the context of planetary cores. This review will focus on measurements of transport properties of double diffusive convection which were performed in two types of experiments: the experiments either start from two layers separated by a sharp interface, or they investigate convection within uniform gradients. The most recent experiments were done on the finger regime in which the slowly diffusing component drives the motion while the rapidly diffusing component stabilizes the fluid and this review is restricted to this configuration.
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Mot clés : convection, convection double diffusive, doigts de sel, instabilité double diffusive, couches de mélange
Andreas Tilgner 1
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@article{CRPHYS_2024__25_S3_A5_0,
author = {Andreas Tilgner},
title = {Experiments on double diffusive convection},
journal = {Comptes Rendus. Physique},
publisher = {Acad\'emie des sciences, Paris},
year = {2024},
doi = {10.5802/crphys.194},
language = {en},
note = {Online first},
}
Andreas Tilgner. Experiments on double diffusive convection. Comptes Rendus. Physique, Online first (2024), pp. 1-18. doi : 10.5802/crphys.194.
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