Transition from homogeneous to inhomogeneous flows in a lattice-gas binary mixture of slender particles

We study the unidirectional flow of a binary mixture of biased-random walkers on a square lattice under a periodic boundary. The lattice-gas mixture consists of two types of slender particles (walkers) which have different biases (drift coefficients). When the density is higher than a critical value...

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Bibliographic Details
Published in:Physica A 2008-04, Vol.387 (10), p.2337-2352
Main Authors: Imanishi, Yasuhito, Kuwajima, Ryota, Nagatani, Takashi
Format: Article
Language:English
Subjects:
Biased-random walker
Clogging
Jamming transition
Lattice-gas mixture
Pedestrian flow
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Summary:We study the unidirectional flow of a binary mixture of biased-random walkers on a square lattice under a periodic boundary. The lattice-gas mixture consists of two types of slender particles (walkers) which have different biases (drift coefficients). When the density is higher than a critical value, a dynamical transition occurs from the homogeneous flow to the inhomogeneous flow and clogging appears. The inhomogeneous state returns to the homogeneous congested flow with further increasing density. The clogging does not appear in the unidirectional flow of the conventional lattice-gas binary mixture of single-site particles. The jamming (clogging) transition is clarified for various sizes of slender particles.
ISSN:0378-4371
1873-2119
DOI:10.1016/j.physa.2008.01.012