Salmerón Contreras, Luis José; García-Raffi, L. M.; Jimenez, Noe; Mehrem, Ahmed; Picó Vila, Rubén; Sánchez Morcillo, Víctor José; Staliunas, K.(Universidade do Porto, 2016-06-15)
[EN] In this work we study numerically the existence of gap solitons in an acoustic media. To approach the
problem a set of coupled-mode equations are given. In order to obtain a solitary wave in a real media,
it is necessary ...
García-Raffi, L. M.; Salmerón-Contreras, L. J.; Herrero-Durá, Iván; Picó Vila, Rubén; Redondo, Javier; Sánchez Morcillo, Víctor José; Cebrecos, Alejandro; Jimenez, Noe; Romero García, Vicente; Staliunas, K.(Universidade do Porto, 2016-06-15)
[EN] From the acoustical point of view one of the most extreme events is the lift-off of a rocket. In such events, an enormous amount of energy is liberated in the form of acoustic waves that are reflected in the launch ...
Simultaneous self-collimation of sound beams with different frequencies, corresponding to fundamental wave and to its second harmonic, is proposed theoretically and demonstrated experimentally. The result is obtained when ...
Mehrem, A.; Picó Vila, Rubén; Sánchez Morcillo, Víctor José; García-Raffi, L. M.; Salmerón-Contreras, L. J.; Jimenez, Noe; Staliunas, K.(Universidade do Porto, 2016-06-15)
[EN] We discuss two possible regimes of solitary wave formation in acoustic layered media. In the weakly
dispersive limit, KdV-type solitons are formed, consisting of broad pulses with a width much larger
than the lattice ...
We propose and numerically demonstrate the feasibility of spatial filtering, i.e. a selective removal of the high spatial frequency components, of narrow acoustic beams during their propagation along a two- dimensional ...