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Dynamical regimes and stability of circular granular ratchets.

ABSTRACT: Ratchets are simple mechanical devices which combine spatial asymmetry and nonequilibrium to produce counterintuitive transport of particles. The operation and properties of linear ratchets have already been extensively explored. However, very little is known about circular granular ratchets, startling devices able to convert vertical vibrations into rotations of the device. Here, we report results of systematic numerical investigations of the operational characteristics of circular granular ratchets. Several distinct behaviors are identified and explained in terms of the inner flow fields of the ratchet. All dynamical regimes found are robust and should not be difficult to observe in laboratory experiments.

SUBMITTER: Muller P

PROVIDER: S-EPMC5629200 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature

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Dynamical regimes and stability of circular granular ratchets.

Müller Patric P Gallas Jason A C JAC Pöschel Thorsten T

Scientific reports 20171005 1

Ratchets are simple mechanical devices which combine spatial asymmetry and nonequilibrium to produce counterintuitive transport of particles. The operation and properties of linear ratchets have already been extensively explored. However, very little is known about circular granular ratchets, startling devices able to convert vertical vibrations into rotations of the device. Here, we report results of systematic numerical investigations of the operational characteristics of circular granular rat ...[more]

PMID: 28983078

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