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Journal Article

Mixing and condensation in a wet granular medium

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Herminghaus,  Stephan
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

Geromichalos, D., Kohonen, M. M., Mugele, F., & Herminghaus, S. (2003). Mixing and condensation in a wet granular medium. Physical Review Letters, 90(16): 168702. doi:10.1103/PhysRevLett.90.168702.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0029-A9F3-7
Abstract
We have studied the effect of small amounts of added liquid on the dynamic behavior of a granular system consisting of a mixture of glass beads of two different sizes. Segregation of the large beads to the top of the sample is found to depend in a nontrivial way on the liquid content. A transition to viscoplastic behavior occurs at a critical liquid content, which depends upon the bead size. We show that this transition can be interpreted as a condensation due to the hysteretic liquid bridge forces connecting the beads, and we provide the corresponding phase diagram.