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Particle dynamics in sheared granular matter | | W. Losert
; L. Bocquet
; T.C. Lubensky
; J.P. Gollub
; | | Date: |
24 Apr 2000 | | Subject: | Statistical Mechanics; Soft Condensed Matter | cond-mat.stat-mech cond-mat.soft | | Abstract: | The particle dynamics and shear forces of granular matter in a Couette geometry are determined experimentally. The normalized tangential velocity $V(y)$ declines strongly with distance $y$ from the moving wall, independent of the shear rate and of the shear dynamics. Local RMS velocity fluctuations $delta V(y)$ scale with the local velocity gradient to the power $0.4 pm 0.05$. These results agree with a locally Newtonian, continuum model, where the granular medium is assumed to behave as a liquid with a local temperature $delta V(y)^2$ and density dependent viscosity. | | Source: | arXiv, cond-mat/0004401 | | Services: | Forum | Review | PDF | Favorites | |
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