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Acoustic characterisation of a small high-speed centrifugal compressor with casing treatment: an experimental study

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Acoustic characterisation of a small high-speed centrifugal compressor with casing treatment: an experimental study

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dc.contributor.author Sharma, Sidharath es_ES
dc.contributor.author Broatch, A. es_ES
dc.contributor.author GARCIA TISCAR, JORGE es_ES
dc.contributor.author Allport, John M. es_ES
dc.contributor.author Nickson, Ambrose K. es_ES
dc.date.accessioned 2020-05-09T03:00:49Z
dc.date.available 2020-05-09T03:00:49Z
dc.date.issued 2019-12 es_ES
dc.identifier.issn 1270-9638 es_ES
dc.identifier.uri http://hdl.handle.net/10251/142895
dc.description.abstract [EN] With the advancements in manufacturing, materials and computational methods, turbomachinery designs have become more efficient providing higher specific power and reliability with lower weight and cost. The rotational speed of turbomachines has increased while the overall machine size has decreased for a similar power output leading to the pervasive presence of small, high-speed turbomachines, specifically centrifugal compressors in helicopters, unmanned aerial vehicles (UAVs), auxiliary power units (APUs), turbochargers and micro gas turbines. In addition to superior aerodynamic performance over a wide range, increased operating speeds have made the acoustic emissions of small centrifugal compressors a critical aspect of design. Therefore, this work presents an experimental campaign to characterise the acoustic behaviour of a compressor with an intent to quantify the dominant features of the flow-induced noise for design and near surge operating conditions. Furthermore, the campaign is extended to establish the impact of the ported shroud casing treatment and operating speed on the acoustic emission of the compressor. The in-duct noise measurement method is used in this work to quantify the noise generated in the compressor by measuring pressure fluctuations near the inducer and diffuser while the propagation of the generated noise to the ducts is computed from an array of piezoelectric sensors. Spectra at the design operating point are dominated by tonal noise while broadband noise content is the dominant feature of spectra for near surge operation. Although the ported shroud cavity does not significantly alter the overall noise levels of the compressor operating at design condition, it does seem to propagate tonal noise. For near surge operation, the casing treatment positively impacts the acoustic emission with a reduction of approximately 10 dB in the range up to the blade pass frequency. Furthermore, various broadband features are also observed to be alleviated by the casing treatment. (C) 2019 Elsevier Masson SAS. All rights es_ES
dc.description.sponsorship The project was sponsored and supported by BorgWarner Turbo Systems and the Regional Growth Fund (RGF Grant Award 01.09.07.01/1789C). The authors would like to thank BorgWarner Turbo Systems for permission to publish the results presented in this paper. es_ES
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation.ispartof Aerospace Science and Technology es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Aeroacoustics es_ES
dc.subject Noise measurement es_ES
dc.subject Compressor es_ES
dc.subject Surge es_ES
dc.subject Ported shroud es_ES
dc.subject.classification MAQUINAS Y MOTORES TERMICOS es_ES
dc.subject.classification INGENIERIA AEROESPACIAL es_ES
dc.title Acoustic characterisation of a small high-speed centrifugal compressor with casing treatment: an experimental study es_ES
dc.type Artículo es_ES
dc.type Comunicación en congreso es_ES
dc.identifier.doi 10.1016/j.ast.2019.105518 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/RGF//01.09.07.01%2F1789C/ 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.; Broatch, A.; Garcia Tiscar, J.; Allport, JM.; Nickson, AK. (2019). Acoustic characterisation of a small high-speed centrifugal compressor with casing treatment: an experimental study. Aerospace Science and Technology. 95:1-15. https://doi.org/10.1016/j.ast.2019.105518 es_ES
dc.description.accrualMethod S es_ES
dc.relation.conferencename 8th International Conference on Vortex Flow Mechanics (ICVFM 2018) es_ES
dc.relation.conferencedate Octubre 16-18,2018 es_ES
dc.relation.conferenceplace Xian, China es_ES
dc.relation.publisherversion https://doi.org/10.1016/j.ast.2019.105518 es_ES
dc.description.upvformatpinicio 1 es_ES
dc.description.upvformatpfin 15 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 95 es_ES
dc.relation.pasarela S\397939 es_ES
dc.contributor.funder Regional Growth Fund, Reino Unido es_ES
dc.contributor.funder BorgWarner Turbo Systems es_ES


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