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Wet granular matter under vertical agitation

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Scheel,  Mario
Group Geometry of Fluid Interfaces, Department of Dynamics of Complex Fluids, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Herminghaus,  S.
Group Granular matter and irreversibility, Department of Dynamics of Complex Fluids, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society;

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Citation

Scheel, M., Geromichalos, D., & Herminghaus, S. (2004). Wet granular matter under vertical agitation. Journal of Physics: Condensed Matter, 16(38): S4213. doi:10.1088/0953-8984/16/38/033.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0029-8022-7
Abstract
We have studied the effect of small amounts of liquid on the dynamic behaviour of a granular system consisting of spherical glass beads under vertical agitation. The critical acceleration crit at which fluidization sets in is found to increase strongly when liquid is added. It furthermore depends upon sample parameters such as the bead size and the shaking frequency. A simple model is proposed which accounts quantitatively for our results and suggests that fluidization by vertical agitation is mainly a surface phenomenon.