Counter Chemotactic Flow in Quasi-One-Dimensional Path

Fujii Masashi

Awazu Akinori

Nishimori Hiraku

Journal of the Physical Society of Japan

Quasi-one-dimensional bidirectional particle flow including the effect of chemotaxis is investigated through a modification of the John-Schadschneider-Chowdhury-Nishinari model. Specifically, we permit multiple lanes to be shared by both directionally traveling particles. The relation between particle density and flux is studied for several evaporation rates of pheromone, and the following results are obtained: i) in the low-particle-density range, the flux is enlarged by pheromone if the pheromone evaporation rate is sufficiently low, ii) in the high particle-density range, the flux is largest at a reasonably high evaporation rate and, iii) if the evaporation rate is at the level intermediate between the above two cases, the flux is kept small in the entire range of particle densities. The mechanism of these behaviors is investigated by observing the spatiotemporal evolution of particles and the average cluster size in the system.

traffic

Jam

particle flow

Chemotaxis

ants

Chemistry [ 430 ]

eng

Physical Soc Japan

Copyright (c) 2009 The Physical Society of Japan

[ISSN] 0031-9015

[DOI] 10.1143/JPSJ.78.073801

[NCID] AA00704814

[DOI] http://dx.doi.org/10.1143/JPSJ.78.073801