Evacuation in the Social Force Model is not Stationary

• Authors: P. Gawroński , K. Kułakowski , M. Kämpf , J. Kantelhardt
• Languages of publication: EN

Abstracts

EN

An evacuation process is simulated within the Social Force Model. Thousand pedestrians are leaving a room by one exit. We investigate the stationarity of the distribution of time lags between instants when two successive pedestrians cross the exit. The exponential tail of the distribution is shown to gradually vanish. Taking fluctuations apart, the time lags decrease in time till there are only about 50 pedestrians in the room, then they start to increase. This suggests that at the last stage the flow is laminar. In the first stage, clogging events slow the evacuation down. As they are more likely for larger crowds, the flow is not stationary. The data are investigated with detrended fluctuation analysis and return interval statistics, and no pattern transition is found between the stages of the process.

Keywords

EN

89.75.Fb; 05.40.-a; 05.45.Tp; 89.40.Bb

Discipline

• 05.45.Tp: Time series analysis
• 89.40.Bb: Land transportation
• 05.40.-a: Fluctuation phenomena, random processes, noise, and Brownian motion(for fluctuations in superconductivity, see 74.40.-n; for statistical theory and fluctuations in nuclear reactions, see 24.60.-k; for fluctuations in plasma, see 52.25.Gj; for nonlinear dynamics and chaos, see 05.45.-a)
• 89.75.Fb: Structures and organization in complex systems

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 121
• Issue: 2B
• Pages: B-77-B-81

Dates

published

2012-02

Contributors

author

P. Gawroński

• Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, al. Mickiewicza 30,PL-30059 Kraków, Poland

author

K. Kułakowski

• Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, al. Mickiewicza 30,PL-30059 Kraków, Poland

author

M. Kämpf

• Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, Halle/Saale, Germany

author

J. Kantelhardt

• Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, Halle/Saale, Germany

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Identifiers

DOI

10.12693/APhysPolA.121.B-77