Université Paris-Sud

  Fluides, Automatique
  et Systèmes Thermiques

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   Accueil > Annuaire > C. Ruyer-Quil > resume-Kofman-151215

Dripping under an inclined plane

Nicolas Kofman (EPFL)

A liquid film flowing under an inclined plane exhibits a transition from convective to absolute instability as shown recently by Brun and coworkers using a lubrication equation. In addition, the latter authors observed experimentally that this transition corresponds roughly to the limit of dripping. We investigate further this idea numerically by using the Ruyer-Quil-Manneville models. When getting closer to horizontality, 2D stationary wave profiles computed by continuation exhibit a transition from Kapitza-like waves to more symmetric drop profiles riding on a thinner substrate. Their 2D/3D secondary modes of instability are anaylzed using a Floquet linear stability analysis and compared with Direct Numerical Simulations in a periodic domain using Gerris.

Dernière modification : November 20 2015, 09:50:24.