Prolonged Clogs in Bottleneck Simulations for Pedestrian Dynamics

Abstract

This article studies clogging phenomena using a velocity-based model for pedestrian dynamics. First, a method to identify prolonged clogs in simulations was introduced. Then bottleneck simulations were implemented with different initial and boundary conditions. The number of prolonged clogs was analyzed to investigate the decisive factors causing this phenomenon. Moreover, the time lapse between two consecutive agents passing the exit, and the trajectories of agents were analyzed. The influence of three types of factors was studied: parameters of the spatial boundaries, algorithmic factors related to the implementation of the model, and the movement model. Parameters of the spatial boundaries include the width and position of the bottleneck exit. Algorithmic factors are the update methods and the size of the time step. Model parameters cover several parameters describing the level of motivation, the strength and range of impact among agents, and the shape of agents. The results show that the occurrence of prolonged clogs is closely linked to parameters of the spatial boundaries and the movement model but has virtually no correlation with algorithmic factors.

References in corpus (10)

• Simulating Dynamical Features of Escape Panic
• Jamming of Soft Particles: Geometry, Mechanics, Scaling and Isostaticity
• Friction effects and clogging in a cellular automaton model for pedestrian dynamics
• Jamming during the discharge of granular matter from a silo
• Introduction of Frictional and Turning Function for Pedestrian Outflow with an Obstacle
• Breaking arches with vibrations: the role of defects
• Invited review: Clogging of granular materials in bottlenecks
• Crowds in front of bottlenecks at entrances from the perspective of physics and social psychology
• Generalized collision-free velocity model for pedestrian dynamics
• Micro- and Macroscopic Modeling of Crowding and Pushing in Corridors