Avalanche dynamics in a pile of rice

Article Abstract:

Experiments to determine avalanche dynamics in a pile of rice indicate that self-organized criticality (SOC) depends on the mechanism of energy dissipation. SOC is a concept associated with avalanches in a pile of sand where the effect is consistent. The relaxation dynamics in long rice grains are characterized by a slow and coherent movement of the grains, with the retention of the solid internal structure. The chances of an avalanche with spherical rice grains that roll down rapidly are low.

Observations, Rice, Dynamics, Dynamics (Mechanics)

---

Avalanche theory in rice

Article Abstract:

V. Frette and colleagues test certain features of self-organized criticality (SOC) by dropping grains of rice. Short, fat grains lead to large avalanches. Larger and longer grains lead to a power-law distribution for avalanche sizes, which is the characteristic of self-organized criticality. Controlled experiments of SOC on a granular media do not provide definite results. Better results are observed in numerical simulations.

Fractals

---

Two types of avalanche behaviour in granular media

Article Abstract:

Single avalanches were created by perturbing a static layer of glass beads on a rough inclined plane. Two distinct types of avalanche were observed, with a thin layer resulting in a avalanche propagating downhill and laterally, while a thick layer results in an avalanche front also propagating upwards. The perturbation threshold for triggering avalanches decreased to zero at a critical slope.

Similar abstracts:

• Abstracts: Exploration of molecular dynamics during transient sorption of fluids in mesoporous materials. The dance of domains
• Abstracts: Sustained vigilance and animal performance. Alarm calls as costly signals of antipredator vigilance: the watchful babbler game
• Abstracts: Are vigilance sequences a consequence of intrinsic chaos or external changes? Group size and anti-predator vigilance: a simple model requiring limited monitoring of other group members
• Abstracts: Performance-enhancers pose dilemma for rule-makers. Asian states link to popularize science. Cancer link to power cables 'exaggerated,' say critics
• Abstracts: Dynamical weakening of faults by acoustic fluidization. Multi-ringed revelation. Craters unchained

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.