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Article Dans Une Revue AIP Conference Proceedings Année : 2010

Creating non-planar static interfaces with magnetic fields Creating non-planar static interfaces with magnetic fields

Résumé

The possibility of creating experimentally static non-planar interfaces using magnetic levitation is explored. Placing a cell filled with magnetic fluids between Faraday pole pieces of an electromagnet, we are able to create a magnetic body force acting as an effective gravity. By using permeable wires that perturb the main field, we are able to create a locally uneven but controllable body force at the interface. Under such conditions, even an interface in purely hydrostatic equilibrium ceases to be planar. An initial proof-of-concept experiment is made in the Rayleigh-Taylor instability, where sinusoidal wires are used to create well-controlled periodic initial perturbations on the interface. Beyond this qualitative demonstration, we conduct here a more systematic quantitative analysis, using numerical calculations in order to determine the expected interface shape for a given shape of permeable wires. The results, combined with the previous experimental demonstration, suggests a promising new technique with the potential to allow, in a near future, the construction of static interfaces of arbitrary shapes.
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Dates et versions

hal-02445540 , version 1 (20-01-2020)

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M.-C. Renoult, T J Atherton, C. Rosenblatt, P. Carlès. Creating non-planar static interfaces with magnetic fields Creating non-planar static interfaces with magnetic fields. AIP Conference Proceedings, 2010, 1207, ⟨10.1063/1.3366387⟩. ⟨hal-02445540⟩
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