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Listar por palabra clave "Wave propagation"

Mostrando ítems 1-10 de 10

Acoustically penetrable sonic crystals based on fluid-like scatterers

Cebrecos Ruiz, Alejandro; Romero García, Vicente; Picó Vila, Rubén; Sánchez Morcillo, Víctor José; Botey, M.; Herrero, R.; Cheng, Y. C.; Staliünas, Kestutis (IOP Publishing: Hybrid Open Access, 2015-01-21)

We propose a periodic structure that behaves as a fluid fluid composite for sound waves, where the building blocks are clusters of rigid scatterers. Such building-blocks are penetrable for acoustic waves, and their properties ...
Computational approach for the acoustic modelling of large aftertreatment devices with multimodal incident sound fields

Sánchez-Orgaz, Eva María; Denia, F. D.; Martínez Casas, José; Carballeira, Javier (SAGE Publications, 2023-09)

[EN] The influence of multimodal incident sound fields on the acoustic behaviour of large aftertreatment devices incorporating a monolith is modelled and analysed in detail. The analytical mode matching method is applied ...
Dynamics of the solutions of the water hammer equations

Conejero, J. Alberto; Lizama, Carlos; Ródenas Escribá, Francisco de Asís (Elsevier, 2016-04-15)

[EN] In this note we provide a representation of the solution using an operator theoretical approach based on the theory of C-0-semigroups and cosine operator functions, when considering this phenomenon on a compressible ...
Elastodynamical properties of Sturmian structured media

Lázaro, Mario; Niemczynowicz, A.; Siemaszko, A.; García-Raffi, L. M. (Elsevier, 2022-01-20)

[EN] In this paper, wave propagation in structured media with quasiperiodic patterns is investigated. We propose a methodology based on Sturmian sequences for the generation of structured mechanical systems from a given ...
Enhanced of sound by soft reflections in exponentially chirped crystals

Cebrecos Ruiz, Alejandro; Picó Vila, Rubén; Sánchez Morcillo, Víctor José; Staliünas, Kestutis; Romero García, Vicente; García-Raffi, L. M. (American Institute of Physics (AIP): Open Access Journals, 2014-12)

The enhancement of sound inside a two dimensional exponentially chirped crystal during the soft reflections of waves is experimentally and theoretically explored in this work. The control of this enhancement is achieved ...
Enhanced transmission band in periodic media with loss modulation

Cebrecos Ruiz, Alejandro; Picó Vila, Rubén; Romero García, Vicente; Yasser, A. M.; Maigyte, L.; Herrero, R.; Botey, M.; Sánchez Morcillo, Víctor José; Staliünas, Kestutis (American Institute of Physics (AIP), 2014-11-17)

We study the propagation of waves in a periodic array of absorbing layers. We report an anomalous increase of wave transmission through the structure related to a decrease of the absorption around the Bragg frequencies. ...
Estudio de transmisión de oleaje para el diseño de diques arrecife homogéneos de Cubípodos. Aplicación a la protección del litoral del Parque Nacional de Corcovado (Costa Rica).

Lozano Tovar, Sergio (Universitat Politècnica de València, 2021-09-23)

[ES] Las estructuras de baja cota (LCS) se utilizan habitualmente como diques exentos para la protección y estabilización de playas. En los últimos años, los procesos erosivos se están intensificando en el litoral de todo ...
Explicit finite-difference time-domain scheme for the simulation of 1-3 piezoelectric effect in axisymmetrical configurations

Ferri García, Marcelino; Camarena Femenia, Francisco; Redondo, Javier; Picó Vila, Rubén; Avis, Mark R. (Elsevier, 2012-09)

[EN] Numerical simulations are useful in the processes of design, development and optimization of transducers for non-destructive testing. In this work, a three-dimensional velocity-stress finite-difference model is presented ...
Metamaterial absorbente de alta porosidad para problemas en transmisión

González Mateo, Enrique Manuel (Universitat Politècnica de València, 2022-01-12)

[ES] En este trabajo se describe teórica y numéricamente un metamaterial acústico basado en poros que producen una absorción cuasi perfecta en transmisión. Los poros están optimizados para soportar resonancias simétricas ...
On the existence of chaos for the viscous van Wijngaarden-Eringen equation

Conejero Casares, José Alberto; Lizama, Carlos; Murillo Arcila, Marina (Elsevier, 2016)

We study the viscous van Wijngaarden–Eringen equation: ∂2u ∂t2 − ∂2u ∂x2 = (Red)−1 ∂3u ∂t∂x2 + a2 0 ∂4u ∂t2∂x2 (1) which corresponds to the linearized version of the equation that models the acoustic planar propagation ...