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Memorias de investigación
Artículos en revistas:
Evolution, stability and equilibrium shapes of rotating drops which are charged or subject to electric fields
Año:2013
Áreas de investigación
  • Matemáticas,
  • Mecánica
Datos
Descripción
In this article, we study by means of the boundary element method the effect that rotation at constant angular momentum L has on the evolution of a conducting and viscous drop when it holds an amount of charge Q on its surface or is immersed in an external electric field of magnitude E? acting in the direction of the rotation axis. This droplet is considered to be contained in another viscous and insulating fluid. Our numerical simulations and stability analysis show that the Rayleigh fissibility ratio ? at which charged drops become unstable decreases with angular momentum. For neutral drops subject to an electric field, the critical value of the field which destabilizes the drop increases with rotation. Concerning equilibrium shapes, approximate spheroids and ellipsoids are obtained and the transition values between these two families of solutions is described. When the drop becomes unstable, a two-lobed structure forms where a pinch-off occurs in finite time or dynamic Taylor cones (in the sense of [Betelú et al., Phys. Fluids. 18 (2006)]) develop, whose semiangle, for small L, remains the same as if there was no rotation in the system.
Internacional
Si
JCR del ISI
Si
Título de la revista
The Quarterly Journal of Mechanics And Applied Mathematics
ISSN
0033-5614
Factor de impacto JCR
1,271
Información de impacto
Volumen
66
DOI
10.1093/qjmam/hbt015
Número de revista
4
Desde la página
489
Hasta la página
516
Mes
NOVIEMBRE
Ranking
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Participantes
  • Autor: Marco Antonio Fontelos López (CSIC)
  • Autor: Víctor García Garrido (CSIC)
  • Autor: Ultano Kindelan Bustelo (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Ingeniería de Georrecursos y Modelización
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