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Block-to-granular-like transition in dense bubble flows

Authors
  • Vandewalle, Nicolas
  • Trabelsi, Samy
  • Caps, Hervé
Publication Date
Feb 01, 2004
Source
ORBi
Keywords
Language
English
License
Unknown
External links

Abstract

We have experimentally investigated 2-dimensional dense bubble flows underneath inclined planes. Velocity profiles and velocity fluctuations have been measured. A broad second-order phase transition between two dynamical regimes is observed as a function of the tilt angle theta. For low theta values, a block motion is observed. For high theta values, the velocity pro. le becomes curved and a shear velocity gradient appears in the flow.

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