71 citations · 513 across the 23 of their papers we have counts for
26 papers
Dimensionless Numbers Reveal Distinct Regimes in the Structure and Dynamics of Pedestrian Crowds
Jakob Cordes, Andreas Schadschneider, Alexandre Nicolas
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…
From microscopic droplets to macroscopic crowds: Crossing the scales in models of short-range respiratory disease transmission, with application to COVID-19
Simon Mendez, Willy Garcia, Alexandre Nicolas
Short-range exposure to airborne virus-laden respiratory droplets is now acknowledged as an effective transmission route of respiratory diseases, as exemplified by COVID-19. In ord…
Social groups in pedestrian crowds: Review of their influence on the dynamics and their modelling
Alexandre Nicolas, Fadratul Hafinaz
Pedestrians are often encountered walking in the company of some social relations, rather than alone. The social groups thus formed, in variable proportions depending on the contex…
Model-based assessment of the risks of viral transmission in non-confined crowds
Willy Garcia, Simon Mendez, Baptiste Fray +1
This work aims to assess the risks of Covid-19 disease spread in diverse daily-life situations (referred to as scenarios) involving crowds of maskless pedestrians, mostly outdoors.…
Dense pedestrian crowds versus granular packings: An analogy of sorts
Alexandre Nicolas
Analogies between the dynamics of pedestrian crowds and granular media have long been hinted at.They seem all the more promising as the crowd is (very) dense, in which case the mec…
Mechanical response of dense pedestrian crowds to the crossing of intruders
Alexandre Nicolas, Marcelo Kuperman, Santiago Ibanez +2
The increasing number of mass events involving large crowds calls for a better understanding of the dynamics of dense crowds. Inquiring into the possibility of a mechanical descrip…