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|Title:||Quantifying the role of folding in nonautonomous flows: the unsteady Double-Gyre|
|Author:||Sulalitha Priyankara, K.|
|Citation:||International Journal of Bifurcation and Chaos, 2017; 27(10):1750156-1-1750156-19|
|Publisher:||World Scientific Publishing|
|K. G. D. Sulalitha Priyankara, Sanjeeva Balasuriya, Erik Bollt|
|Abstract:||We analyze chaos in the well-known nonautonomous Double-Gyre system. A key focus is on folding, which is possibly the less-studied aspect of the “stretching+folding=chaos” mantra of chaotic dynamics. Despite the Double-Gyre not having the classical homoclinic structure for the usage of the Smale–Birkhoff theorem to establish chaos, we use the concept of folding to prove the existence of an embedded horseshoe map. We also show how curvature of manifolds can be used to identify fold points in the Double-Gyre. This method is applicable to general nonautonomous flows in two dimensions, defined for either finite or infinite times.|
|Keywords:||Chaos; horseshoe map; Double-Gyre; transverse intersection; curvature|
|Rights:||© World Scientific Publishing Company|
|Appears in Collections:||Mathematical Sciences publications|
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