Large Force Fluctuations in a Flowing Granular Medium
Large Force Fluctuations in a Flowing Granular Medium
We study fluctuations in the force at the boundary of a 2D granular flow. The forces are mainly impulsive at all flow rates. The probability distribution of impulses decays exponentially at large impulses, as do the forces in a static granular medium. At small impulses, the distribution evolves continuously with …