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Effects of ported shroud casing treatment on the acoustic and flow behaviour of a centrifugal compressor

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Effects of ported shroud casing treatment on the acoustic and flow behaviour of a centrifugal compressor

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dc.contributor.author Sharma, Sidharath es_ES
dc.contributor.author GARCIA TISCAR, JORGE es_ES
dc.contributor.author Allport, John M. es_ES
dc.contributor.author Barrans, Simon es_ES
dc.contributor.author Nickson, Ambrose K. es_ES
dc.date.accessioned 2021-02-09T04:32:17Z
dc.date.available 2021-02-09T04:32:17Z
dc.date.issued 2020-08 es_ES
dc.identifier.issn 1468-0874 es_ES
dc.identifier.uri http://hdl.handle.net/10251/160907
dc.description.abstract [EN] Centrifugal turbomachines of smaller sizes operating at higher speeds have become pervasive due to the increased specific power and reliability achieved by improvements in manufacturing, materials and computational methods. The presence of these small turbomachines, specifically compressors, in helicopters, unmanned aerial vehicles (UAVs), auxiliary power units (APUs), turbochargers and micro gas turbines necessitates superior aerodynamic performance over a broad operational range which is widely achieved by ported shroud casing designs. In addition to aerodynamic performance, acoustic emissions have become a critical aspect of design for these small centrifugal compressors due to high operational speeds. Furthermore, the literature on the acoustic effects of the casing treatment is rather limited. Therefore, the impact of ported shroud casing treatment on the acoustic and flow features of the compressor operating at the design and near surge conditions have been quantified by numerically modelling the open and blocked configuration of the compressors. Upon comparing with experimental results, the numerical spectra are shown to capture the differences between the two configurations at the investigated operating points with reasonable accuracy. Although the casing treatment is generally seen to decrease the overall acoustic emission of the compressor at both operating conditions, increased propagation of tonal content in the direction upstream to the impeller is observed, particularly for design operation. Broadband characteristics in the lower and medium frequency regions usually associated with near surge operation including `whoosh' noise are observed to be alleviated by the ported shroud casing treatment. es_ES
dc.description.sponsorship The author(s) disclosed receipt of the following financial support for the research, authorship and/or publication of this article: The project is sponsored and supported by BorgWarner Turbo Systems and the Regional Growth Fund (RGF Grant Award 01.09.07.01/1789C). es_ES
dc.language Inglés es_ES
dc.publisher SAGE Publications es_ES
dc.relation RGF/01.09.07.01/1789C es_ES
dc.relation.ispartof International Journal of Engine Research es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Compressor noise es_ES
dc.subject Stress blended eddy simulation es_ES
dc.subject Ported shroud es_ES
dc.subject Computational fluid dynamics es_ES
dc.subject Aeroacoustics es_ES
dc.subject.classification INGENIERIA AEROESPACIAL es_ES
dc.title Effects of ported shroud casing treatment on the acoustic and flow behaviour of a centrifugal compressor es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1177/1468087419880431 es_ES
dc.rights.accessRights Abierto es_ES
dc.contributor.affiliation Universitat Politècnica de València. Departamento de Máquinas y Motores Térmicos - Departament de Màquines i Motors Tèrmics es_ES
dc.description.bibliographicCitation Sharma, S.; Garcia Tiscar, J.; Allport, JM.; Barrans, S.; Nickson, AK. (2020). Effects of ported shroud casing treatment on the acoustic and flow behaviour of a centrifugal compressor. International Journal of Engine Research. 21(6):998-1011. https://doi.org/10.1177/1468087419880431 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1177/1468087419880431 es_ES
dc.description.upvformatpinicio 998 es_ES
dc.description.upvformatpfin 1011 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 21 es_ES
dc.description.issue 6 es_ES
dc.relation.pasarela S\395043 es_ES
dc.contributor.funder BorgWarner Turbo Systems es_ES
dc.contributor.funder Regional Growth Fund, Reino Unido es_ES


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