Barciela Segura, Carlos(Universitat Politècnica de València, 2019-09-18)
[ES] El Mar Mediterra¿neo es un punto caliente del planeta en cuanto a biodiversidad, pero tambie¿n en cuanto a presio¿n antropoge¿nica y a los problemas que surgen de esta situacio¿n. En este contexto, uno de los mayores ...
Escobar Franco, María Gabriela(Universitat Politècnica de València, 2018-03-15)
La circulación oceánica es el resultado del equilibrio de distintas fuerzas tales como el forzamiento atmosférico, fricción y la rotación planetaria. Este trabajo muestra la base teórica de la circulación oceánica a gran ...
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 ...
Herrero-Durá, Iván; Cebrecos, Alejandro; Picó Vila, Rubén; Romero-García, Vicente; García-Raffi, L. M.; Sánchez Morcillo, Víctor José(MDPI AG, 2020-03)
[EN] We report a theoretical and experimental study of an array of Helmholtz resonators optimized to achieve both efficient sound absorption and diffusion. The analysis starts with a simplified 1D model where the plane ...
Atiénzar-Navarro, Roberto; Rey Tormos, Romina María del; Alba, Jesus; Sánchez Morcillo, Víctor José; Picó Vila, Rubén(MDPI AG, 2020-02)
[EN] The acoustic properties of recycled polyurethane foams are well known. Such foams are used as a part of acoustic solutions in different fields such as building or transport. This paper aims to seek improvements in the ...
Redondo, Javier; Picó Vila, Rubén; Sánchez Morcillo, Víctor José; Woszczyk, Wieslaw(Acoustical Society of America, 2013-12)
A sound diffuser is proposed based on sonic crystals, structures formed by a periodic distribution of cylindrical scatterers in a host medium, which is usually air. The diffuser is a so-called biperiodic structure, as ...
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 ...
We consider the problem of parametric sound generation in an acoustic interferometer
containing a fluid. We have taken explicitly into account both the influence of the nonlinearly
generated second harmonic and the ...
Bedoya Valestt, Shalenys Esther(Universitat Politècnica de València, 2020-10-13)
[ES] Este trabajo aborda por primera vez una laguna en el conocimiento de las tendencias y variabilidad climática decadal de la velocidad del viento asociada a episodios de brisa marina, así como la influencia de la ...
[EN] The finite-element time-domain method for elastic band-structure calculations is presented in this paper. The method is based on discretizing the appropriate equations of motion by finite elements, applying Bloch ...
Although periodic structures theory gave rise to sound diffusers almost 40 years ago, it has been
only in recent years when several authors regarded the possible application of a particular kind
of periodic structures, ...
Mehrem Issa Mohamed Mehrem, Ahmed(Universitat Politècnica de València, 2013-11-14)
There are many developments in Ultrasound contrast agents (UCAs) which leads to improvement in medical image. Ultrasound contrast agents are micro scale gas bubbles encapsulated with thin shells on the order of nanometers ...
Nadal Arizo, Irene(Universitat Politècnica de València, 2019-03-06)
[ES] El voraz [Pagellus bogaraveo (Brünnich, 1768)] es una especie altamente apreciada tanto por su valor económico como gastronómico en el Estrecho de Gibraltar. No obstante, por esta misma razón, es también una de las ...
A time-domain numerical code based on the constitutive relations of nonlinear acoustics for simulating ultrasound propagation is presented. To model frequency power law attenuation, such as observed in biological media, ...
Cebrecos Ruiz, Alejandro(Universitat Politècnica de València, 2015-10-26)
[EN] Phononic crystals are artificial materials formed by a periodic arrangement of inclusions embedded into a host medium, where each of them can be solid or fluid. By controlling the geometry and the impedance contrast ...
Vidal Moreno, Carme(Universitat Politècnica de València, 2013-05-21)
El objetivo de este trabajo es el estudio experimental y numérico del proceso de
formación de ondas de arena o ripples inducidas por el viento. También se estudia el
efecto de obstáculos en el fenómeno. Estos obstáculos ...
Archilla, Juan F. R.; Kosevich, Yuri; Jimenez, Noe; Sánchez Morcillo, Víctor José; García-Raffi, L. M.(American Physical Society, 2015-02-13)
In this paper we develop a dynamical model of the propagating nonlinear localized excitations, supersonic kinks, in the cation layer in a silicate mica crystal. We start from purely electrostatic Coulomb interaction and ...
We predict the existence of evanescent modes with unlocked phases in two-dimensional (2D) dielectric periodic structures. Contrary to what is known for one-dimensional structures, where evanescent fields lock to the host ...
Febrer Mesquida, Antoni(Universitat Politècnica de València, 2017-01-18)
La tortuga boba (Caretta caretta) es una tortuga marina residente en el
Mediterráneo. En los últimos años esta especie de tortuga marina ha empezado a
colonizar las costas del levante español. Hoy en día se desconoce ...