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Quarterly of Applied Mathematics

Quarterly of Applied Mathematics

Online ISSN 1552-4485; Print ISSN 0033-569X

   
 
 

 

Hyperbolicity and nonconservativity of a hydrodynamic model of swarming rigid bodies


Authors: P. Degond, A. Frouvelle, S. Merino-Aceituno and A. Trescases
Journal: Quart. Appl. Math. 82 (2024), 35-64
MSC (2020): Primary 35L60, 35L65, 35L67, 76L05
DOI: https://doi.org/10.1090/qam/1651
Published electronically: March 21, 2023
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Abstract: We study a nonlinear system of first order partial differential equations describing the macroscopic behavior of an ensemble of interacting self-propelled rigid bodies. Such system may be relevant for the modelling of bird flocks, fish schools or fleets of drones. We show that the system is hyperbolic and can be approximated by a conservative system through relaxation. We also derive viscous corrections to the model from the hydrodynamic limit of a kinetic model. This analysis prepares the future development of numerical approximations of this system.


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Additional Information

P. Degond
Affiliation: Institut de Mathématiques de Toulouse, UMR5219, Université de Toulouse, CNRS, UPS, F-31062 Toulouse Cedex 9, France
MR Author ID: 56020
ORCID: 0000-0003-2114-9210
Email: pierre.degond@math.univ-toulouse.fr

A. Frouvelle
Affiliation: CEREMADE, CNRS, Université Paris-Dauphine, Université PSL, 75016 Paris, France
MR Author ID: 961028
ORCID: 0000-0001-6828-8176
Email: frouvelle@ceremade.dauphine.fr

S. Merino-Aceituno
Affiliation: Faculty of Mathematics, University of Vienna, Oskar-Morgenstern-Platz 1, 1090 Vienna, Austria
MR Author ID: 1117242
Email: sara.merino@univie.ac.at

A. Trescases
Affiliation: Institut de Mathématiques de Toulouse, UMR5219, Université de Toulouse, CNRS, UPS, F-31062 Toulouse Cedex 9, France
MR Author ID: 1108757
Email: ariane.trescases@math.univ-toulouse.fr

Received by editor(s): October 27, 2022
Received by editor(s) in revised form: December 21, 2022
Published electronically: March 21, 2023
Additional Notes: The first author holds a visiting professor association with the Department of Mathematics, Imperial College London, UK. The second author was supported by the Project EFI ANR-17-CE40-0030 of the French National Research Agency. The second author thanks the hospitality of the Laboratoire de Mathématiques et Applications (LMA, CNRS) in the Université de Poitiers, where part of this research was conducted. The third author’s research was supported by the Austrian Science Fund (FWF) through the project F65 and by the Vienna Science and Technology Fund (WWTF) [10.47379/VRG17014].
Dedicated: Dedicated to Bob Pego, in friendship and admiration
Article copyright: © Copyright 2023 Brown University