Optimizing evacuation flow in a two-channel exclusion process

Details Optimizing evacuation flow in a two-channel exclusion process Optimizing evacuation flow in a two-channel exclusion process

2011-04-24

arxiv.org/abs/1104.4634v1

J. Stat. Mech. (2011) P09004

Physics

Physics and Society

16 pages, 6 figures

Scientific paper

10.1088/1742-5468/2011/09/P09004

We use a basic setup of two coupled exclusion processes to model a stylised situation in evacuation dynamics, in which evacuees have to choose between two escape routes. The coupling between the two processes occurs through one common point at which particles are injected, the process can be controlled by directing incoming individuals into either of the two escape routes. Based on a mean-field approach we determine the phase behaviour of the model, and analytically compute optimal control strategies, maximising the total current through the system. Results are confirmed by numerical simulations. We also show that dynamic intervention, exploiting fluctuations about the mean-field stationary state, can lead to a further increase in total current.

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