par Coullet, Pierre;Walgraef, Daniel 
Référence Europhysics letters, 10, 6, page (525-531)
Publication Publié, 1989-11
Référence Europhysics letters, 10, 6, page (525-531)
Publication Publié, 1989-11
Article révisé par les pairs
| Résumé : | The effect of two-dimensional spatial modulations on spatio-temporal Hopf bifurcations is investigated. In particular, in the case of a spatial forcing corresponding to triangular or hexagonal planforms, a strong resonance between triplets of travelling waves may occur, provided that the wavelength of the forcing is nearly equal to one-third of the critical one. In this case a periodic spatio-temporal pattern of triangular symmetry may be stabilized in regions of the parameter space where it is otherwise unstable. Such a phenomenon may present the onset of turbulence in forced hexagonal vortex lattices. © 1989 IOP Publishing Ltd. |
