Laboratoire de Physique
Theorique d'Orsay

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Univ. Paris-Sud
Université Paris-Saclay
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Agenda > Actualités / News Dernier ajout : vendredi 15 février 2019.

Scientific highlights in LPT

A couple of recent results obtained by members of LPT

Do dense crowds behave as granular matter ? by C. Appert-Rolland et al

An experiment inspired by the study of granular matter has been realized, in which an intruder is crossing a dense static crowd. The displacement field around the intruder reveals that, though there are similarities with grains, some deep differences could also be found. Indeed, pedestrians anticipate, leading to a depletion in front of the intruder and not only behind. Besides, the displacements are almost exclusively lateral, in contrast with the front-rear circulation observed in grains. These findings question the models currently used to model dense crowds, which assume in general that mechanical forces fully constrain pedestrians’ behavior at high densities - at odds with our findings.

link to the paper

JPG - 179.5 ko