Breakup of a pendant magnetic drop
| Autor: | Philippe Tordjeman, Frédéric Risso, Nicolas Havard |
|---|---|
| Přispěvatelé: | Centre National de la Recherche Scientifique - CNRS (FRANCE), Ecole Normale Supérieure de Lyon - ENS de Lyon (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Institut de mécanique des fluides de Toulouse (IMFT), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées, École normale supérieure - Lyon (ENS Lyon), Institut National Polytechnique de Toulouse - INPT (FRANCE), Université de Toulouse (UT)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), École normale supérieure de Lyon (ENS de Lyon) |
| Jazyk: | angličtina |
| Rok vydání: | 2013 |
| Předmět: |
Pressure drop
Ferrofluid Materials science Magnetism Drop (liquid) Mécanique des fluides Magnetic fluid properties 02 engineering and technology Mechanics 021001 nanoscience & nanotechnology Breakup Pendant magnetic drop 01 natural sciences [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph] Magnetic field Physics::Fluid Dynamics Classical mechanics 0103 physical sciences Spinning drop method [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] Wetting 010306 general physics 0210 nano-technology |
| Zdroj: | Physical Review E : Statistical, Nonlinear, and Soft Matter Physics Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, American Physical Society, 2013, vol. 88, pp. 1-5. ⟨10.1103/PhysRevE.88.013014⟩ Physical Review E : Statistical, Nonlinear, and Soft Matter Physics, 2013, vol. 88, pp. 1-5. ⟨10.1103/PhysRevE.88.013014⟩ |
| ISSN: | 1539-3755 1550-2376 |
| DOI: | 10.1103/PhysRevE.88.013014⟩ |
| Popis: | International audience; We report experiments on a millimeter-sized pendant drop of ferrofluid in a horizontal magnetic field. The initial drop size is chosen just below the breakup threshold under gravity. As the magnetic field is increased, the drop tilts in order to align with the direction of the total volume force that is exerted on it: weight plus magnetic force. The breakup is controlled by a generalized Bond number based on this total force and on the radius of the neck of the drop. The evolution of drop shape turns out to be a complex process governed by many parameters such as the angle between the total force and the needle, the drop size relative to the needle radius, and the wettability of the liquid on the needle material. This suggests a certain universality, that a single value of the critical Bond number is found regardless of magnetic fluid properties and whether the force is inclined or not. |
| Databáze: | OpenAIRE |
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