Dimensionless Numbers Reveal Distinct Regimes in the Structure and Dynamics of Pedestrian Crowds

Autor:	Cordes, Jakob, Schadschneider, Andreas, Nicolas, Alexandre
Rok vydání:	2023
Předmět:	Condensed Matter - Statistical Mechanics Physics - Physics and Society
Druh dokumentu:	Working Paper
Popis:	In fluid mechanics, dimensionless numbers like the Reynolds number help classify flows. We argue that such a classification is also relevant for crowd flows by putting forward the dimensionless Intrusion and Avoidance numbers.Using an extensive dataset, we show that these delineate regimes that are characterized by distinct structural signatures, best probed in terms of distances at low Avoidance number and times-to-collision at low Intrusion number.These findings prompt a perturbative expansion of the agent-based dynamics; the generic models thus obtained perform well in (and only in) the regime in which they were derived. Comment: PNAS Nexus, In press
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2307.12786 Zobrazit plný text záznamu View this record from Arxiv