Abstract
The particle dynamics and shear forces of granular matter in a Couette geometry are determined experimentally. The normalized tangential velocity declines strongly with distance from the moving wall, independent of the shear rate and of the shear dynamics. Local rms velocity fluctuations scale with the local velocity gradient to the power . These results agree with a locally Newtonian, continuum model, where the granular medium is assumed to behave as a liquid with a local temperature and density dependent viscosity.
- Received 21 April 2000
DOI:https://doi.org/10.1103/PhysRevLett.85.1428
©2000 American Physical Society