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Published on: February 13, 2018
Nonlinear dynamics of short traveling capillary-gravity waves
C H Borzi1, R A Kraenkel, M A Manna
1Facultad de Ciencias Exactas y Naturales de la Universidad Nacional de Buenos Aires, Pab. II, Nuñez, Buenos Aires, Argentina.
Abstract:
We establish a Green-Nagdhi model equation for capillary-gravity waves in (2+1) dimensions. Through the derivation of an asymptotic equation governing short-wave dynamics, we show that this system possesses (1+1) traveling-wave solutions for almost all the values of the Bond number theta (the special case theta=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.
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