The European Physical Journal Special Topics

, Volume 166, Issue 1, pp 63–66 | Cite as

Experimental study of the instability of a film flowing down a vertical fiber

  • C. DupratEmail author
  • C. Ruyer-Quil
  • F. Giorgiutti-Dauphiné
Regular Article


The wavy dynamics of a viscous film flowing axisymmetrically on a vertical fiber is characterized experimentally. The study of the initial response of the flow to natural noise shows a well-defined transition between a convective and an absolute instability [1]. In the convective case, disturbances of controlled frequencies have been applied at inlet. The flow responds to inlet excitation at frequencies lower than a well-defined cut-off frequency. A good agreement has been found with the linear stability analysis and with the solution to a two-equation model [2] in the nonlinear regime.


European Physical Journal Special Topic Linear Stability Analysis Force Frequency Periodic Perturbation Secondary Instability 
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Copyright information

© EDP Sciences and Springer 2009

Authors and Affiliations

  • C. Duprat
    • 1
    Email author
  • C. Ruyer-Quil
    • 1
  • F. Giorgiutti-Dauphiné
    • 1
  1. 1.Lab. FAST, UMR 7608, Campus UniversitaireOrsayFrance

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