corner
corner

Phys. Rev. Lett. 89, 074301 (2002) [4 pages]

Development of Grain Avalanches

Download: PDF (214 kB) Buy this article Export: BibTeX or EndNote (RIS)

Jean Rajchenbach
Laboratoire des Milieux Désordonnés et Hétérogènes (CNRS-UMR 7603)–Case 86, Université Pierre et Marie Curie, 4 Place Jussieu, 75252 Paris Cedex 05, France

Received 15 November 2001; published 30 July 2002

We present a new theoretical approach aimed to describe the dynamical properties of avalanches. Starting from simple microscopic considerations, we propose an analytical derivation accounting for the avalanche growth as a function of time. The solution resembles very closely recent experimental observations. We show in particular that the two observed regimes of growth proceed from a singularity in the rear front velocity as a function of the slope.

© 2002 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.89.074301
DOI:
10.1103/PhysRevLett.89.074301
PACS:
45.70.Ht, 45.05.+x, 47.50.+d, 83.80.Fg