Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Subharmonic surface waves in a horizontally vibrated container
Year:2012
Research Areas
  • Fluid mechanics,
  • Difference equations
Information
Abstract
Horizontal vibrations of rectangular containers first produce harmonic waves and then subharmonic waves as the forcing acceleration is increased. A theoretical analysis is performed that provides both the subharmonic instability threshold and the associated patterns. A key ingredient in the theory is an oscillatory bulk flow (OBF) produced by the vibrating container that extends horizontally to a length comparable with the container depth. The OBF involves harmonic temporal oscillations in the vertical pressure gradient at the free surface. It is precisely those pressure gradient oscillations that trigger subharmonic waves, as in the vertical forced Faraday instability. The obtained results compare well with experimental measurements/visualization that will also be presented.
International
Si
Congress
65th Annual Meeting of the APS Division of Fluid Dynamics
960
Place
San Diego, California. EE.UU.
Reviewers
No
ISBN/ISSN
11-1111-111-1
Start Date
18/11/2012
End Date
20/11/2012
From page
8
To page
8
Participants
  • Autor: Jose Miguel Perez de Gracia (UPM)
  • Autor: Jeffrey Brent Porter (UPM)
  • Autor: Fernando Varas (UPM)
  • Autor: Jose Manuel Vega De Prada (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Ciencias y Operaciones Aeroespaciales
  • Grupo de Investigación: Dinámica y estabilidad no lineal en ingeniería aeroespacial
  • Departamento: Vehículos Aeroespaciales
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