Analysis and approximation of one-dimensional scalar conservation laws with general point constraints on the fluxReport as inadecuate




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1 LMPT - Laboratoire de Mathématiques et Physique Théorique 2 LMB - Laboratoire de Mathématiques de Besançon 3 Instytut Matematyki Universytet Marii Curie-Sklodowskiej

Abstract : We introduce and analyze a class of models with nonlocal point constraints for traffic flow through bottlenecks, such as exits in the context of pedestrians traffic and reduction of lanes on a road under construction in vehicular traffic.
Constraints are defined based on data collected from non-local in space and-or in time observations of the flow.
We propose a theoretical analysis and discretization framework that permits to include different data acquisition strategies; a numerical comparison is provided.
Nonlocal constraint allows to model, e.g., the irrational behavior - panic - near the exit observed in dense crowds and the capacity drop at tollbooth in vehicular traffic.
Existence and uniqueness of solutions are shown under suitable and - easy to check - assumptions on the constraint operator.
A numerical scheme for the problem, based on finite volume methods, is designed, its convergence is proved and its validation is done with an explicit solution.
Numerical examples show that nonlocally constrained models are able to reproduce important features in traffic flow such as self-organization.


Keywords : scalar conservation law nonlocal point constraint well-posedness fixed point arguments finite volume scheme convergence of approximations vehicular traffics crowd dynamics





Author: Boris Andreianov - Carlotta Donadello - Ulrich Razafison - Massimiliano Rosini -

Source: https://hal.archives-ouvertes.fr/



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