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Communication Dans Un Congrès Année : 2022

Are experiments of Metal Pad Roll Instability feasible at Room Temperature?

Résumé

Are experiments of Metal Pad Roll Instability feasible at Room Temperature? Caroline Nore with Wietze Herreman, Loic Cappanera, Jean-Luc Guermond and Tom Weier. Université Paris-Saclay, CNRS, LISN, 91400 Orsay, France Aluminium Hall-Héroult reduction cells can be the place of the metal pad roll instability (MPR), ie the growth of gravity waves at the interface between the mixture of cryolite and alumina on top and the liquid aluminium on bottom when a weak ambient magnetic field is present [1]. Combining theoretical arguments and numerical simulations, we demonstrate that this MPR instability can occur in a centimeter-scale setup with reasonable values of the magnetic field and electrical current and with metal pairs that are liquid at room temperature. We investigate two fluid pairs: gallium with mercury (immiscible pair) and gallium with GaInSn eutectic alloy (miscible pair). We propose an experimental setup and discuss a list of difficulties that can be overcome [2]. [1] T. Sele, Metall. Mater. Trans. B 8, 613 (1977). [2] C. Nore, L. Cappanera, J.-L. Guermond, T. Weier and W. Herreman: Feasibility of metal pad roll instability experiments at room temperature, Phys. Rev. Lett. 126, 184501 (2021).
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Dates et versions

hal-04400887 , version 1 (17-01-2024)

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  • HAL Id : hal-04400887 , version 1

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Caroline Nore. Are experiments of Metal Pad Roll Instability feasible at Room Temperature?. Journée de Dynamique des Fluides du Plateau de Saclay (JDFP), Laurent Martin Witkowski, Mar 2022, Orsay, France. ⟨hal-04400887⟩
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