Vibration Driven Vehicles Flowing Through Bottlenecks

Patterson, G. A.; Jimka, F. Sangiuliano; König, Pablo G.; Pugnaloni, Luis A.; Garcimartín, Ángel; Zuriguel, Iker; Fierens, Pablo Ignacio; Parisi, Daniel R.

doi:10.1007/978-3-030-11440-4_50

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2020

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“…In some of these ex-periments, the integral to calculate the mean time lapse diverges and one needs an alternative characterization of the dynamic state of the system. An experiment with 'bristlebots', self-propelled elongated mechanical toys [87,88], yielded exponents that are also much smaller than those found in our study, close to the critical value of γ c = 1 where τ diverges.…”

Section: Discussion and Summarysupporting

confidence: 50%

A simple model system for self-propelled particles passing a bottleneck

Mohammadi,

Harth,

Puzyrev

et al. 2020

Preprint

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We study the passage of active and passive granular particles through a bottleneck under gravitational bias. The grains are pharmaceutical capsules with nearly spherocylindrical shapes on a vibrating table. The vibrating plate is slightly tilted in order to break the in-plane symmetry and to give particles a motivation to move in a preferential direction on the plate. The passage through a narrow gate with openings comparable to the grain length is studied using video imaging, and particle positions and velocities are extracted from the recorded frames. We compare the behaviour of asymmetrically filled, active capsules with symmetrically filled, passive ones.

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Section: Discussion and Summarysupporting

confidence: 50%