CGL Defect Chaos and Bursts in Hexagonal Rotating non-Boussinesq Convection
Pattern Formation and Solitons
2007-05-23 v1 Chaotic Dynamics
Abstract
We employ numerical computations of the full Navier-Stokes equations to investigate non-Boussinesq convection in a rotating system using water as a 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 oscillations exhibit localized chaotic bursting, which can be modeled by a quintic complex Ginzburg-Landau equation.
Keywords
Cite
@article{arxiv.nlin/0507059,
title = {CGL Defect Chaos and Bursts in Hexagonal Rotating non-Boussinesq Convection},
author = {Santiago Madruga and Hermann Riecke and Werner Pesch},
journal= {arXiv preprint arXiv:nlin/0507059},
year = {2007}
}
Comments
Submitted to Physical Review Letters