Experiments and computational simulations are carried out to study the behavior of a granular column in a silo whose walls are able to vibrate horizontally. The column is brought to a steady fluidized state and it behaves similar to a hydrostatic system. We study the dynamics of the granular discharge through openings at the bottom of the silo in order to search for a Torricelli-like behavior. We show that the flow rate scales with the wall induced shear rate, and at high rates, the granular bed indeed discharges similar to a viscous fluid.
|Number of pages||6|
|Journal||Physical review E: Statistical, nonlinear, and soft matter physics|
|Publication status||Published - 2008|
Pacheco-Martinez, H., van Gerner, H. J., & Ruiz-Suarez, J. C. (2008). Storage and discharge of a granular fluid. Physical review E: Statistical, nonlinear, and soft matter physics, 77(2), . https://doi.org/10.1103/PhysRevE.77.021303