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Arnaud Chiffaudel
Researcher at Centre national de la recherche scientifique
Publications - 45
Citations - 2160
Arnaud Chiffaudel is an academic researcher from Centre national de la recherche scientifique. The author has contributed to research in topics: Turbulence & Flow (mathematics). The author has an hindex of 23, co-authored 45 publications receiving 2079 citations.
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Journal ArticleDOI
Generation of a magnetic field by dynamo action in a turbulent flow of liquid sodium.
Romain Monchaux,Michael Berhanu,Mickaël Bourgoin,Marc Moulin,Philippe Odier,Jean-François Pinton,Romain Volk,Stéphan Fauve,Nicolas Mordant,François Pétrélis,Arnaud Chiffaudel,François Daviaud,Bérengère Dubrulle,Cécile Gasquet,Louis Marié,Florent Ravelet +15 more
TL;DR: The observation of dynamo action in the von Kármán sodium experiment, i.e., the generation of a magnetic field by a strongly turbulent swirling flow of liquid sodium, is reported.
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Multistability and memory effect in a highly turbulent flow: experimental evidence for a global bifurcation.
TL;DR: Experimental evidence of a global bifurcation on a highly turbulent von Kármán flow is reported and the role of turbulence is discussed in two ways: the multiplicity of hydrodynamical solutions and the effect of fluctuations on the nature of transitions.
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Buoyant-thermocapillary instabilities in extended liquid layers subjected to a horizontal temperature gradient
TL;DR: In this article, the authors report experiments on buoyant-thermocapillary instabilities in differentially heated liquid layers, and the results are obtained for a fluid of Prandtl number 10 in a rectangular geometry with different aspect ratios.
Journal ArticleDOI
The von Karman Sodium experiment: Turbulent dynamical dynamos
Romain Monchaux,Michael Berhanu,Sébastien Aumaître,Arnaud Chiffaudel,François Daviaud,Bérengère Dubrulle,Florent Ravelet,Stéphan Fauve,Nicolas Mordant,François Pétrélis,Mickaël Bourgoin,Philippe Odier,Jean-François Pinton,Nicolas Plihon,Romain Volk +14 more
TL;DR: In this article, the self-generation of a stationary dynamo when the flow forcing is R-pi-symmetric, i.e., when the impellers rotate in opposite directions at equal angular velocities, is studied.
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Magnetohydrodynamics measurements in the von Kármán sodium experiment
Mickaël Bourgoin,Louis Marié,François Pétrélis,Cécile Gasquet,Alain Guigon,Jean-Baptiste Luciani,Marc Moulin,Frédéric Namer,Javier Burguete,Arnaud Chiffaudel,François Daviaud,Stéphan Fauve,Philippe Odier,Jean-François Pinton +13 more
TL;DR: In this paper, the authors studied magnetic induction in a confined swirling flow of liquid sodium, at integral magnetic Reynolds numbers up to 50, and measured the magnetic field induced by the flow motion in the presence of a weak external field.