Robust tori-like Lagrangian coherent structures

Nenhuma Miniatura disponível

Data

2012-12-15

Autores

de Oliveira, Luis C.
Martins, Caroline G. L.
Roberto, M.
Caldas, I. L.
Egydio de Carvalho, R. [UNESP]

Título da Revista

ISSN da Revista

Título de Volume

Editor

Elsevier B.V.

Resumo

In general the term "Lagrangian coherent structure" (LCS) is used to make reference about structures whose properties are similar to a time-dependent analog of stable and unstable manifolds from a hyperbolic fixed point in Hamiltonian systems. Recently, the term LCS was used to describe a different type of structure, whose properties are similar to those of invariant tori in certain classes of two-dimensional incompressible flows. A new kind of LCS was obtained. It consists of barriers, called robust tori that block the trajectories in certain regions of the phase space. We used the Double-Gyre Flow system as the model. In this system, the robust tori play the role of a skeleton for the dynamics and block, horizontally, vortices that come from different parts of the phase space. (C) 2012 Elsevier B.V. All rights reserved.

Descrição

Palavras-chave

Robust tori, Lagrangian coherent structures, Double-gyre flow, Nonlinearities

Como citar

Physica A-statistical Mechanics and Its Applications. Amsterdam: Elsevier B.V., v. 391, n. 24, p. 6611-6616, 2012.