Modelado analítico-numérico y caracterización experimental de silenciadores de escape híbridos

Bordes, Martínez; Manuel, José

doi:10.4995/thesis/10251/14419

Cited by 1 publication

(1 citation statement)

References 70 publications

(169 reference statements)

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“…Hybrid silencers can also be included within configurations with dissipation, since they combine the geometric and attenuation characteristics of resonators and dissipative silencers, providing a combination of reactive and dissipative effects. Some works have demonstrated the benefit of combining both types of behaviour in hybrid mufflers, i.e., reactive and dissipative effects for low and high frequencies respectively, which may lead to a broadband attenuation performance including resonant peaks at particular frequencies that can be pre-selected by the designer [59,60,66,116].…”

Section: Dissipative Configurationsmentioning

confidence: 99%

Advanced numerical techniques for the acoustic modelling of materials and noise control devices in the exhaust system of internal combustion engines

Orgaz¹,

María²

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This Thesis is focused on the development and implementation of general and efficient numerical methods for the acoustic modelling and design of noise control devices in the exhaust system of combustion engines. Special attention is paid to silencers, that can be divided into reactive and dissipative configurations. For the latter, significant differences are likely to appear in their acoustic behaviour, depending on the temperature variations within the absorbent material. Also, material heterogeneities associated with uneven filling processes and time degradation due to the exhaust gases, can alter the silencer attenuation performance. Therefore, numerical techniques considering all these features are required to guarantee an accurate prediction of the acoustic behaviour.

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Section: Dissipative Configurationsmentioning

confidence: 99%

Advanced numerical techniques for the acoustic modelling of materials and noise control devices in the exhaust system of internal combustion engines

Orgaz¹,

María²

View full text Add to dashboard Cite

show abstract

Modelado analítico-numérico y caracterización experimental de silenciadores de escape híbridos

Cited by 1 publication

References 70 publications

Advanced numerical techniques for the acoustic modelling of materials and noise control devices in the exhaust system of internal combustion engines

Advanced numerical techniques for the acoustic modelling of materials and noise control devices in the exhaust system of internal combustion engines

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