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Velocity enhancement of slow particles in lattice–gas binary mixture

Author

Listed:
  • Fukamachi, Masahiro
  • Kuwajima, Ryota
  • Imanishi, Yasuhito
  • Nagatani, Takashi

Abstract

We study the unidirectional flow of a binary mixture of biased-random walkers on square lattice under a periodic boundary. The lattice–gas mixture consists of two types of walkers which have different biases (drift coefficients). The characteristics of unidirectional flow are clarified numerically. The mean velocity of slow particles in the binary mixture is enhanced higher than that in lattice–gas consisting of only slow particles. The mean velocity of slow particles shows a maximal value at an intermediate density. The dependence of velocity enhancement on both drift coefficient and mixture fraction is shown. Velocity enhancement is intensified with decreasing fraction of slow particles. Also, when the bias is lower, the velocity enhancement is higher.

Suggested Citation

  • Fukamachi, Masahiro & Kuwajima, Ryota & Imanishi, Yasuhito & Nagatani, Takashi, 2007. "Velocity enhancement of slow particles in lattice–gas binary mixture," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 383(2), pages 425-434.
  • Handle: RePEc:eee:phsmap:v:383:y:2007:i:2:p:425-434
    DOI: 10.1016/j.physa.2007.05.018
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    Cited by:

    1. Fang, Jun & Qin, Zheng & Hu, Hao & Xu, Zhaohui & Li, Huan, 2012. "The fundamental diagram of pedestrian model with slow reaction," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 391(23), pages 6112-6120.

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