Defect chaos and bursts: Hexagonal rotating convection and the complex Ginzburg-Landau equation

Madruga Sánchez, Santiago and Riecke, Hermann and Pesch, Werner (2006). Defect chaos and bursts: Hexagonal rotating convection and the complex Ginzburg-Landau equation. "Physical Review Letters", v. 96 ; pp.. ISSN 0031-9007. https://doi.org/10.1103/PhysRevLett.96.074501.

Description

Title: Defect chaos and bursts: Hexagonal rotating convection and the complex Ginzburg-Landau equation
Author/s:
  • Madruga Sánchez, Santiago
  • Riecke, Hermann
  • Pesch, Werner
Item Type: Article
Título de Revista/Publicación: Physical Review Letters
Date: 24 February 2006
ISSN: 0031-9007
Volume: 96
Subjects:
Faculty: E.T.S.I. Aeronáuticos (UPM)
Department: Fundamentos Matemáticos de la Tecnología Aeronáutica [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

We employ numerical computations of the full Navier-Stokes equations to investigate non-Boussinesq convection in a rotating system using water as the working fluid. We identify two regimes. For weak non- Boussinesq effects the Hopf bifurcation from steady to oscillating (whirling) hexagons is supercritical and typical states exhibit defect chaos that is systematically described by the cubic complex Ginzburg-Landau equation. For stronger non-Boussinesq effects the Hopf bifurcation becomes subcritical and the oscil- lations exhibit localized chaotic bursting, which is modeled by a quintic complex Ginzburg-Landau equation.

More information

Item ID: 21711
DC Identifier: http://oa.upm.es/21711/
OAI Identifier: oai:oa.upm.es:21711
DOI: 10.1103/PhysRevLett.96.074501
Deposited by: Memoria Investigacion
Deposited on: 11 Feb 2014 14:59
Last Modified: 21 Apr 2016 12:26
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