Observatorio de I+D+i UPM

Memorias de investigación
Artículos en revistas:
Instabilities of vibroequilibria in rectangular containers
Año:2017
Áreas de investigación
  • Mecánica de fluidos,
  • Estabilidad hidrodinámica,
  • Fisica y ciencias del espacio
Datos
Descripción
Vibroequilibria theory, based on minimizing an averaged energy functional, predicts the quasi-equilibrium shape that a fluid volume will take when subjected to high-frequency vibrations. Here we present a detailed comparison of the predictions of vibroequilibria theory with the results of direct numerical simulations in horizontally vibrated rectangular containers, finding very good agreement over a range of parameters. The calculations also reveal an important difference in the behavior between small and large fluid volumes. With dimensionless volume larger than about 0.36, the symmetric vibroequilibria solution suffers a saddle-node instability prior to contact with the container bottom. This saddle-node bifurcation is analyzed using a simplified family of surfaces and shown to persist when gravity is included. Finally, an investigation of dynamic effects is presented, where a strong correlation is found between modulated subharmonic surface waves and the first odd sloshing mode. At large enough amplitude, this sloshing destroys the underlying vibroequilibria state and thus represents a possible instability for vibroequilibria in low viscosity fluids.
Internacional
Si
JCR del ISI
No
Título de la revista
Physics of Fluids
ISSN
1070-6631
Factor de impacto JCR
2,279
Información de impacto
Volumen
29
DOI
10.1063/1.4976719
Número de revista
2
Desde la página
024108-1
Hasta la página
024108-15
Mes
SIN MES
Ranking
40/134
Esta actividad pertenece a memorias de investigación
Participantes
  • Autor: Jose Javier Fernandez Fraile (UPM)
  • Autor: Ignacio Tinao Perez-Miravete (UPM)
  • Autor: Jeffrey Brent Porter (UPM)
  • Autor: Ana Laveron Simavilla (UPM)
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Departamento: Matemática Aplicada a la Ingeniería Aeroespacial
S2i 2021 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)