Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
Subharmonic instabilities in vibrating flows
Year:2015
Research Areas
  • Mathematics,
  • Physics & space science,
  • Mechanical aeronautics and naval engineering
Information
Abstract
A simplified two-dimensional amplitude equation has been recently derived by us (JFM 739(2014), 196) that provided the subharmonic instability threshold in horizontally vibrating containers, which match very well quantitatively with former experiments by Porter et al (Fluid Dyn. Res. 44(2012), 065501). Moreover, the equation also predicted the primary patterns, which were experimentally confirmed by Tinao et.al (Phys. Fluids 24 (2014), 022110). This equation can also be used in different configurations, such as in mixed horizontal/vertical vibrations and in cross-waves produced by immersed wavemakers, which were analyzed by Moisy et al (Phys. Fluids 24, (2012) 022110). An overview of cross-waves will be made using the above-mentioned amplitude equation, addressing issues such as obliqueness of the primary patterns, quasi-periodicity, and surface contamination, which is expected in experimental realizations using tap water.
International
Si
Congress
22nd European Low Gravity Research Association (ELGRA) Symposium
960
Place
Corfu (Grecia)
Reviewers
Si
ISBN/ISSN
978-960-418-589-4
Start Date
29/09/2015
End Date
01/10/2015
From page
42
To page
42
ELGRA Biennial Symposium and General Assembly 2015.
Participants
  • Autor: Jose Miguel Perez de Gracia Delgado (UPM)
  • Autor: Fernando Varas Merida (UPM)
  • Autor: Jose Manuel Vega De Prada (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Dinámica y estabilidad no lineal en ingeniería aeroespacial
  • Departamento: Matemática Aplicada a la Ingeniería Aeroespacial
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
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