Phase portraits on the unit sphere of the stretch-twist-fold flow

The so-called stretch-twist-fold flow consists in a Stokes flow depending on two parameters defined in a unit closed ball B that is associated with the motion of a fluid particle coming from the dynamo theory, and it models a mechanism for studying the magnetic field of the Earth and the Sun. Here...

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Bibliographic Details
Main Authors: Jaume Llibre, Claudia Valls
Format: Article
Language:English
Published: Vilnius University Press 2023-08-01
Series:Nonlinear Analysis
Subjects:
Online Access:https://zurnalai.vu.lt/nonlinear-analysis/article/view/33088
Description
Summary:The so-called stretch-twist-fold flow consists in a Stokes flow depending on two parameters defined in a unit closed ball B that is associated with the motion of a fluid particle coming from the dynamo theory, and it models a mechanism for studying the magnetic field of the Earth and the Sun. Here for the first time, we classify all the local phase portraits of its equilibrium points, and we provide the global phase portraits on the 2-dimensional sphere of the boundary of the ball B.
ISSN:1392-5113
2335-8963