A finite element approach is proposed for the acoustic analysis of automotive silencers including a perforated duct with uniform axial mean flow and an outer chamber with heterogeneous absorbent material. This material can ...

[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 ...

[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 ...

[ES] Durante las últimas décadas se ha optado por la producción de energía eólica para la transición ecológica. Esta energía se extrae del viento que incide en las palas del generador y es transformada en eléctrica. Tras ...

[ES] El presente Trabajo Fin de Grado aborda el diseño y cálculo de un sistema de frenado pasivo, en el que se usan electroimanes, y de emergencia, friccionando contra el suelo. Este estudio, hecho para la compañía Zeleros ...

[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 ...

[ES] El TFG se centra en el estudio de fibras disipativas naturales, con el objetivo de determinar su capacidad de atenuación frente a las tradicionales fibras sintéticas. Las fibras naturales son capaces de actuar como ...

[EN] The Universitat Politècnica de València (UPV) has developed programs defining specific and generic competences for its Bachelors' and Masters' degrees and for the subjects along them. In an engineering context, the ...

[EN] Nowadays, the European higher education space is concerned, not only about the transmission of theoretical knowledge, but also about the acquisition of soft-skills, which are increasingly demanded in the professional ...

A mixed finite element model has been derived for the acoustic analysis of perforated dissipative silencers including several effects simultaneously: (1) High temperature and thermal gradients in the central duct and the ...