Instability of dilute granular flow on rough slope

Details Instability of dilute granular flow on rough slope Instability of dilute granular flow on rough slope

2001-04-30

arxiv.org/abs/cond-mat/0104571v2

J. Phys. Soc. Jpn., Vol. 70, 2809 (2001).

Physics

Condensed Matter

Statistical Mechanics

4 pages, 6 figures, submitted to J. Phys. Soc. Jpn.; Fig. 2 replaced; references added; comments added; misprints corrected

Scientific paper

10.1143/JPSJ.70.2809

We study numerically the stability of granular flow on a rough slope in collisional flow regime in the two-dimension. We examine the density dependence of the flowing behavior in low density region, and demonstrate that the particle collisions stabilize the flow above a certain density in the parameter region where a single particle shows an accelerated behavior. Within this parameter regime, however, the uniform flow is only metastable and is shown to be unstable against clustering when the particle density is not high enough.

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