par Mosekilde, Erik;Larsen, Finn;Dewel, Guy 
;Borckmans, Pierre
Référence International journal of bifurcation and chaos in applied sciences and engineering, 8, 5, page (1003-1012)
Publication Publié, 1998
;Borckmans, Pierre Référence International journal of bifurcation and chaos in applied sciences and engineering, 8, 5, page (1003-1012)
Publication Publié, 1998
Article révisé par les pairs
| Résumé : | Aspects of the mode-interaction and pattern-selection processes in far-from-equilibrium chemical reaction-diffusion systems are studied through numerical simulation of the Lengyel-Epstein model. By varying the feed concentrations, a transition is observed in which hexagons are replaced by stripes and these again by inverted hexagons. The competition between Hopf oscillations and Turing stripes is investigated by following the propagation of a front connecting the two modes. In certain parameter regimes, mode-locking is found to occur. The front then moves an integer number of Turing stripes during an integer number of Hopf oscillations. This phenomenon can be seen as arising from depinning of the Turing front under influence of the Hopf mode. |
