Nonlinear Dynamics of Short Travelling Capillary-gravity Waves Auteur(s): Borzi H. c., Kraenkel R.a, Manna M., Pereira A. (Article) Publié: Physical Review E: Statistical, Nonlinear, And Soft Matter Physics, vol. 71 p.026307 (2005) Texte intégral en Openaccess : Ref HAL: hal-00338939_v1 PMID 15783419 DOI: 10.1103/PhysRevE.71.026307 WoS: 000228246200057 Exporter : BibTex | endNote 11 Citations Résumé: We establish a Green-Nagdhi model equation for capillary-gravity waves in (2+1) dimensions. Through the derivation of an asymptotic equation governing short-waves dynamics, we show that this system posseses (1+1) travelling waves solutions for almost all the values of the Bond number B (the special case B=1/3 is not studied). These waves become singular when their amplitude is larger than a threshold value, related to the velocity of the wave. The limit angle at the crest is then calculated. The stability of a wave train is also studied via a Benjamin-Feir modulational analysis. Commentaires: 9 pages |