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Block to granular-like transition in dense bubble flows

N. Vandewalle·S. Trabelsi·H. Caps
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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 $θ$. For low $θ$ values, a block motion is observed. For high $θ$ values, the velocity profile becomes curved and a shear velocity gradient appears in the flow.

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N. Vandewalle, S. Trabelsi, H. Caps. 2004-01-05. Block to granular-like transition in dense bubble flows. https://doi.org/10.1209/epl%2Fi2003-10103-6

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