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Acoustic improvement of stator–rotor interaction with nonuniform trailing edge blowing

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Wang, Wenjie and Thomas, P. J. (Peter J.) (2018) Acoustic improvement of stator–rotor interaction with nonuniform trailing edge blowing. Applied Sciences, 8 (6). 994. doi:10.3390/app8060994

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Official URL: https://doi.org/10.3390/app8060994

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Abstract

The results of unsteady-flow simulations and experiments are discussed to investigate active noise-reduction effects on the stator–rotor interaction in a single-stage low-speed compressor with nonuniform trailing edge blowing. It is found that for the investigated type of stator–rotor interaction noise, nonuniform trailing edge blowing has beneficial noise-reducing effects. The overall aim is to demonstrate that nonuniform trailing edge blowing can compensate momentum loss and reduce the axial thrust on rotor blades. The results illustrate how nonuniform trailing edge blowing influences the sound pressure level of the blade-passing frequencies and results in active noise reduction effects. The study was conducted using a trailing edge blowing system, a four-hole dynamic flow-field measurement system, and phase lock technology. The results obtained show that nonuniform trailing edge blowing leads to substantial noise-reduction effects, lowering sound levels by more than 10 dB with about 5‰ of inlet mass flow.

Item Type: Journal Article
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Science > Engineering
Library of Congress Subject Headings (LCSH): Compressors -- Blades -- Mathematical models, Air flow -- Simulation methods
Journal or Publication Title: Applied Sciences
Publisher: MDPI
ISSN: 2076-3417
Official Date: 19 June 2018
Dates:
DateEvent
19 June 2018Available
16 June 2018Accepted
Date of first compliant deposit: 19 June 2018
Volume: 8
Number: 6
Article Number: 994
DOI: 10.3390/app8060994
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Open Access
RIOXX Funder/Project Grant:
Project/Grant IDRIOXX Funder NameFunder ID
201809110025China Scholarship Councilhttp://dx.doi.org/10.13039/501100004543

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