- Visualization of displacement fields in a sheared granular system
- Soft Matter
- Volume | Issue number
- 6 | 13
- Pages (from-to)
- Document type
- Faculty of Science (FNWI)
- Van der Waals-Zeeman Institute (WZI)
We study experimentally the motion of particles in a wet granular system at the onset of flow. The suspension is density matched and subjected to a uniform confining pressure and uniform shear. Trajectories of the individual particles are visualized in three dimensions using laser sheet imaging. These trajectories reveal a flow field with pressure-dependent dilation and superdiffusive motions around the mean flow. Correlations in the particle displacements are analyzed as a function of applied confining pressure and applied shear. We find correlations with a pressure-dependant correlation length at small strains.
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