A multi-layer model for self-propelled disks interacting through alignment and volume exclusion
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Published version
Author(s)
Degond, P
Navoret, L
Type
Journal Article
Abstract
We present an individual-based model describing disk-like self-propelled particles moving
inside parallel planes. The disk directions of motion follow alignment rules inside
each layer. Additionally, the disks are subject to interactions with those of the neighboring
layers arising from volume exclusion constraints. These interactions affect the disk
inclinations with respect to the plane of motion. We formally derive a macroscopic model
composed of planar self-organized hydrodynamic (SOH) models describing the transport
of mass and evolution of mean direction of motion of the disks in each plane, supplemented
with transport equations for the mean disk inclination. These planar models
are coupled due to the interactions with the neighboring planes. Numerical comparisons
between the individual-based and macroscopic models are carried out. These models
could be applicable, for instance, to describe sperm-cell collective dynamics.
inside parallel planes. The disk directions of motion follow alignment rules inside
each layer. Additionally, the disks are subject to interactions with those of the neighboring
layers arising from volume exclusion constraints. These interactions affect the disk
inclinations with respect to the plane of motion. We formally derive a macroscopic model
composed of planar self-organized hydrodynamic (SOH) models describing the transport
of mass and evolution of mean direction of motion of the disks in each plane, supplemented
with transport equations for the mean disk inclination. These planar models
are coupled due to the interactions with the neighboring planes. Numerical comparisons
between the individual-based and macroscopic models are carried out. These models
could be applicable, for instance, to describe sperm-cell collective dynamics.
Date Issued
2015-08-26
Date Acceptance
2015-05-20
Citation
Mathematical Models and Methods in Applied Science, 2015, 25 (13), pp.2439-2475
ISSN
0218-2025
Publisher
World Scientific Publishing
Start Page
2439
End Page
2475
Journal / Book Title
Mathematical Models and Methods in Applied Science
Volume
25
Issue
13
Copyright Statement
© 2015 The Authors. This is an open access article published by World Scientific Publishing and distributed under the
terms of the Creative Commons Attribution (CC BY) 4.0 License, which permits use, distribution
and reproduction in any medium, provided the original author(s) and source are credited.
terms of the Creative Commons Attribution (CC BY) 4.0 License, which permits use, distribution
and reproduction in any medium, provided the original author(s) and source are credited.
License URL
Subjects
Self-organized hydrodynamics
Vicsek model
Fokker–Planck equation;
generalized collision invariant
Publication Status
Published