Buscar en RiuNet

Listar

Todo RiuNet

Mi cuenta

Acceder

Ayuda RiuNet

Admin. UPV

Listar por palabra clave "Transmission loss"

Mostrando ítems 1-10 de 10

Acoustic characteristics of circular dissipative reversing chamber mufflers

Denia, F. D.; Antebas, Antoine; Selamet, A.; Pedrosa Sanchez, Ana Maria (Institute of Noise Control Engineering, 2011)

[EN] In this work, a three-dimensional analytical model is presented for the propagation of sound in circular dissipative reversing chamber mufflers with perforated frontal plates and bulk-reacting fibrous material. The ...
Acoustic modelling of large aftertreatment devices with multimodal incident sound fields

Denia, F. D.; Sánchez-Orgaz, Eva María; Martínez Casas, José; Carballeira, Javier; Baeza González, Luis Miguel (Universitat Politècnica de València, 2021-11-30)

[EN] The influence of multimodal incident sound fields on the acoustic behaviour of large aftertreatment devices (ATD) is analysed in detail. The mode matching method is applied to the compatibility conditions of the ...
Advanced numerical techniques for the acoustic modelling of materials and noise control devices in the exhaust system of internal combustion engines

Sánchez Orgaz, Eva María (Universitat Politècnica de València, 2016-05-16)

[EN] This Thesis is focused on the development and implementation of efficient numerical methods for the acoustic modelling and design of noise control devices in the exhaust system of combustion engines. Special attention ...
Assessment of the fluid-dynamic and acoustic behaviour of a swirl static mixer for after-treatment systems

Torregrosa, A. J.; Broatch, A.; Quintero-Igeño, Pedro-Manuel; Redondo-Navarro, Álvaro Rafael; Morin, F. (Elsevier, 2022-01-15)

[EN] An investigation on the acoustic transmission loss and the pressure drop caused by a mixer inducing element located downstream of a Diesel Exhaust Fluid (DEF) injection port was carried out in order to reduce the ...
Characterization of impervious layers using scale models and an inverse method

Alba Fernández, Jesús; Escuder Silla, Eva María; Ramis Soriano, Jaime; Rey Tormos, Romina María del (Elsevier, 2009-09-25)

We describe a novel procedure that uses an inverse method to determine unknown parameters for impervious layers used in multilayer structures. The proposed model of the multilayer structure is limited to an ideal double ...
Desarrollo e implementación en Comsol de una metodología completa de modelado y simulación acústica de silenciadores disipativos de vehículos con superficies perforadas, microperforadas y sinterizadas

Juan Tato, Víctor (Universitat Politècnica de València, 2016-05-27)

[EN] The main objective of this Master Thesis is to develop and implement a methodology based on finite element and analytical solutions that allow the characterization and simulation of the acoustic behaviour of ...
Efficient finite element modelling of sound propagation in after treatment devices with arbitrary cross section

Denia Guzmán, Francisco David; Sánchez Orgaz, Eva María; Ferrándiz-Catalá, Borja; Martínez Casas, José; Baeza González, Luis Miguel (2020-07-10)

[EN] The acoustic modelling of exhaust after-treatment devices, such as catalytic converters (CC) and diesel particulate filters (DPF), usually requires the use of multidimensional numerical techniques to assess the influence ...
Materiales para la elaboración de carpas acústicas

Martínez Navarro, Sara (Universitat Politècnica de València, 2014-01-27)

Cada vez es más habitual el realizar eventos sonoros en carpas exteriores. En la mayoría de éstos una carpa queda como único elemento separador entre dicho evento y su entorno. Desde el año 2010, se ha visto incrementado ...
Modelado y análisis de la influencia del gradiente de temperatura en silenciadores de escape disipativos mediante elementos finitos

Bresó Beltrán, José (Universitat Politècnica de València, 2017-01-03)

[EN] This Master Thesis is focused on the development and implementation of a numerical methodology, based on the finite element method, which allows the characterization and simulation of the acoustic behaviour of ...
Topology and shape optimization of dissipative and hybrid mufflers

Ferrándiz-Catalá, Borja; Denia, F. D.; Martínez Casas, José; Nadal, Enrique; Ródenas, Juan José (Springer-Verlag, 2020-07)

[EN] This article presents a Topology Optimization (TO) method developed for maximizing the acoustic attenuation of a perforated dissipative muffler in the targeted frequency range by optimally distributing the absorbent ...