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Acoustic modelling of large aftertreatment devices with multimodal incident sound fields

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Název: Acoustic modelling of large aftertreatment devices with multimodal incident sound fields
Autoři: Denia Guzmán, Francisco David, Sánchez Orgaz, Eva María, Martínez Casas, José, Carballeira Morado, Javier, Baeza González, Luis Miguel
Přispěvatelé: Escuela Técnica Superior de Ingeniería Aeroespacial y Diseño Industrial, Departamento de Ingeniería Mecánica y de Materiales, Centro de Investigación en Ingeniería Mecánica, Instituto Universitario de Investigación Concertado de Ingeniería Mecánica y Biomecánica, Escuela Técnica Superior de Ingeniería Industrial
Informace o vydavateli: Universitat Politècnica de València
Rok vydání: 2021
Sbírka: Universitat Politécnica de Valencia: RiuNet / Politechnical University of Valencia
Témata: Multimodal incidence, Large aftertreatment device, Acoustic behaviour, Mode matching method, Transmission loss, INGENIERIA MECANICA
Popis: [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 three-dimensional (3D) acoustic fields at the device geometric discontinuities, leading to the computation of the complex wave amplitudes in all the subdomains involved and the corresponding transmission loss (TL). To have a realistic model, 3D propagation must be considered in the inlet/outlet ducts and chambers, while 1D wave propagation has to be assumed along the small capillaries of the catalytic converter/particulate filter monoliths of the ATD; therefore, these monoliths can be replaced by plane wave four pole transfer matrices from an acoustical point of view [1]. On the other hand, for large ATD inlet ducts such as those found in heavy-duty and off-road engines, the usual models with plane incident wave excitation are not accurate since the onset of higher order incident modes in the inlet duct is expected for the frequency range of interest. Therefore, a TL variation is likely to occur depending on these modes, similar to the results found in large dissipative silencers [2]. Results are presented for three different multimodal incident sound field hypotheses [3]: equal modal amplitude (EMA), equal modal power (EMP) and equal modal energy density (EMED). A relevant influence on the sound attenuation is found for the test problems considered in the current investigation. References [1] Denia, F. D., Martínez-Casas, J., Carballeira, J., Nadal, E., Fuenmayor, F. J., Computational performance of analytical methods for the acoustic modelling of automotive exhaust devices incorporating monoliths. Journal of Computational and Applied Mathematics, 330: 995--1006, 2018. [2] Kirby, R., Lawrie, J. B., A point collocation approach to modelling large dissipative silencers. Journal of Sound and Vibration, 286: 313--339, 2005. [3] Mechel, F. P., Formulas of Acoustics. Berlin, Springer, 2008. ; The authors ...
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Jazyk: English
Relation: Modelling for Engineering & Human Behaviour 2021: València, July 14th-16th, 2021; info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-112886RA-I00/ES/MODELIZACION VIBROACUSTICA Y DESARROLLO DE DISPOSITIVOS OPTIMIZADOS DE REDUCCION SONORA PARA LA MITIGACION DE LA CONTAMINACION ACUSTICA DEL FERROCARRIL EN AREAS URBANAS/; info:eu-repo/grantAgreement/GVA//PROMETEO%2F2021%2F046/ES/MODELADO NUMÉRICO AVANZADO EN INGENIERÍA MECÁNICA/; info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-118013RB-C21/ES/DESARROLLO DE MODELOS INTEGRALES PARA LA SIMULACION DE LA INTERACCION DINAMICA VEHICULO-DESVIO/; Mathematical Modelling in Engineering & Human Behaviour 2021 (MME&HB 2021); Julio 14-16,2021; Valencia, Spain; https://imm.webs.upv.es/jornadas/2022/past_editions.html; https://riunet.upv.es/handle/10251/190556
Dostupnost: https://riunet.upv.es/handle/10251/190556
Rights: http://rightsstatements.org/vocab/InC/1.0/ ; info:eu-repo/semantics/openAccess
Přístupové číslo: edsbas.3DA41964
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Items – Name: Title
  Label: Title
  Group: Ti
  Data: Acoustic modelling of large aftertreatment devices with multimodal incident sound fields
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Denia+Guzmán%2C+Francisco+David%22">Denia Guzmán, Francisco David</searchLink><br /><searchLink fieldCode="AR" term="%22Sánchez+Orgaz%2C+Eva+María%22">Sánchez Orgaz, Eva María</searchLink><br /><searchLink fieldCode="AR" term="%22Martínez+Casas%2C+José%22">Martínez Casas, José</searchLink><br /><searchLink fieldCode="AR" term="%22Carballeira+Morado%2C+Javier%22">Carballeira Morado, Javier</searchLink><br /><searchLink fieldCode="AR" term="%22Baeza+González%2C+Luis+Miguel%22">Baeza González, Luis Miguel</searchLink>
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  Label: Contributors
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  Data: Escuela Técnica Superior de Ingeniería Aeroespacial y Diseño Industrial<br />Departamento de Ingeniería Mecánica y de Materiales<br />Centro de Investigación en Ingeniería Mecánica<br />Instituto Universitario de Investigación Concertado de Ingeniería Mecánica y Biomecánica<br />Escuela Técnica Superior de Ingeniería Industrial
– Name: Publisher
  Label: Publisher Information
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  Data: Universitat Politècnica de València
– Name: DatePubCY
  Label: Publication Year
  Group: Date
  Data: 2021
– Name: Subset
  Label: Collection
  Group: HoldingsInfo
  Data: Universitat Politécnica de Valencia: RiuNet / Politechnical University of Valencia
– Name: Subject
  Label: Subject Terms
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  Data: <searchLink fieldCode="DE" term="%22Multimodal+incidence%22">Multimodal incidence</searchLink><br /><searchLink fieldCode="DE" term="%22Large+aftertreatment+device%22">Large aftertreatment device</searchLink><br /><searchLink fieldCode="DE" term="%22Acoustic+behaviour%22">Acoustic behaviour</searchLink><br /><searchLink fieldCode="DE" term="%22Mode+matching+method%22">Mode matching method</searchLink><br /><searchLink fieldCode="DE" term="%22Transmission+loss%22">Transmission loss</searchLink><br /><searchLink fieldCode="DE" term="%22INGENIERIA+MECANICA%22">INGENIERIA MECANICA</searchLink>
– Name: Abstract
  Label: Description
  Group: Ab
  Data: [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 three-dimensional (3D) acoustic fields at the device geometric discontinuities, leading to the computation of the complex wave amplitudes in all the subdomains involved and the corresponding transmission loss (TL). To have a realistic model, 3D propagation must be considered in the inlet/outlet ducts and chambers, while 1D wave propagation has to be assumed along the small capillaries of the catalytic converter/particulate filter monoliths of the ATD; therefore, these monoliths can be replaced by plane wave four pole transfer matrices from an acoustical point of view [1]. On the other hand, for large ATD inlet ducts such as those found in heavy-duty and off-road engines, the usual models with plane incident wave excitation are not accurate since the onset of higher order incident modes in the inlet duct is expected for the frequency range of interest. Therefore, a TL variation is likely to occur depending on these modes, similar to the results found in large dissipative silencers [2]. Results are presented for three different multimodal incident sound field hypotheses [3]: equal modal amplitude (EMA), equal modal power (EMP) and equal modal energy density (EMED). A relevant influence on the sound attenuation is found for the test problems considered in the current investigation. References [1] Denia, F. D., Martínez-Casas, J., Carballeira, J., Nadal, E., Fuenmayor, F. J., Computational performance of analytical methods for the acoustic modelling of automotive exhaust devices incorporating monoliths. Journal of Computational and Applied Mathematics, 330: 995--1006, 2018. [2] Kirby, R., Lawrie, J. B., A point collocation approach to modelling large dissipative silencers. Journal of Sound and Vibration, 286: 313--339, 2005. [3] Mechel, F. P., Formulas of Acoustics. Berlin, Springer, 2008. ; The authors ...
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  Data: Modelling for Engineering & Human Behaviour 2021: València, July 14th-16th, 2021; info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-112886RA-I00/ES/MODELIZACION VIBROACUSTICA Y DESARROLLO DE DISPOSITIVOS OPTIMIZADOS DE REDUCCION SONORA PARA LA MITIGACION DE LA CONTAMINACION ACUSTICA DEL FERROCARRIL EN AREAS URBANAS/; info:eu-repo/grantAgreement/GVA//PROMETEO%2F2021%2F046/ES/MODELADO NUMÉRICO AVANZADO EN INGENIERÍA MECÁNICA/; info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-118013RB-C21/ES/DESARROLLO DE MODELOS INTEGRALES PARA LA SIMULACION DE LA INTERACCION DINAMICA VEHICULO-DESVIO/; Mathematical Modelling in Engineering & Human Behaviour 2021 (MME&HB 2021); Julio 14-16,2021; Valencia, Spain; https://imm.webs.upv.es/jornadas/2022/past_editions.html; https://riunet.upv.es/handle/10251/190556
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    Languages:
      – Text: English
    Subjects:
      – SubjectFull: Multimodal incidence
        Type: general
      – SubjectFull: Large aftertreatment device
        Type: general
      – SubjectFull: Acoustic behaviour
        Type: general
      – SubjectFull: Mode matching method
        Type: general
      – SubjectFull: Transmission loss
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      – SubjectFull: INGENIERIA MECANICA
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      – TitleFull: Acoustic modelling of large aftertreatment devices with multimodal incident sound fields
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