Stationary localized structures and the effect of the delayed feedback in the brusselator model

B. Kostet, M. Tlidi, F. Tabbert, T. Frohoff-Hülsmann, S. V. Gurevich, E. Averlant, R. Rojas, G. Sonnino, K. Panajotov

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2 Scopus citations

Abstract

The Brusselator reaction–diffusion model is a paradigm for the understanding of dissipative structures in systems out of equilibrium. In the first part of this paper, we investigate the formation of stationary localized structures in the Brusselator model. By using numerical continuation methods in two spatial dimensions, we establish a bifurcation diagram showing the emergence of localized spots. We characterize the transition from a single spot to an extended pattern in the form of squares. In the second part, we incorporate delayed feedback control and show that delayed feedback can induce a spontaneous motion of both localized and periodic dissipative structures. We characterize this motion by estimating the threshold and the velocity of the moving dissipative structures. This article is part of the theme issue ‘Dissipative structures in matter out of equilibrium: from chemistry, photonics and biology (part 2)’.

Original languageEnglish
Article number20170385
JournalPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences
Volume376
Issue number2135
DOIs
StatePublished - 28 Dec 2018
Externally publishedYes

Keywords

  • Bifurcations
  • Delayed feedback
  • Drift instability
  • Localized structures
  • Pattern formation
  • Reaction–diffusion systems

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