Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/95646
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Mechanical Engineering | en_US |
dc.creator | Arif, I | en_US |
dc.creator | Lam, GCY | en_US |
dc.creator | Leung, RCK | en_US |
dc.creator | Naseer, MR | en_US |
dc.date.accessioned | 2022-09-27T02:46:31Z | - |
dc.date.available | 2022-09-27T02:46:31Z | - |
dc.identifier.issn | 1070-6631 | en_US |
dc.identifier.uri | http://hdl.handle.net/10397/95646 | - |
dc.language.iso | en | en_US |
dc.publisher | American Institute of Physics | en_US |
dc.rights | © 2022 Author(s). Published under an exclusive license by AIP Publishing. | en_US |
dc.rights | This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Irsalan Arif, Garret C. Y. Lam, Randolph C. K. Leung, Muhammad Rehan Naseer; Distributed surface compliance for airfoil tonal noise reduction at various loading conditions. Physics of Fluids 1 April 2022; 34 (4): 046113 and may be found at https://dx.doi.org/10.1063/5.0087350. | en_US |
dc.title | Distributed surface compliance for airfoil tonal noise reduction at various loading conditions | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.volume | 34 | en_US |
dc.identifier.issue | 4 | en_US |
dc.identifier.doi | 10.1063/5.0087350 | en_US |
dcterms.abstract | A novel concept of utilizing distributed surface compliance to achieve airfoil tonal noise reduction at various loading conditions is proposed. The aeroacoustics of airfoil configuration subjected to different loading conditions at angles of attack (AoAs) from 3° to 7° are numerically studied using high-fidelity two-dimensional direct aeroacoustic simulation at Reynolds and Mach numbers of 5 × 10 4 and 0.4, respectively. Initially, airfoil configurations mounted with single elastic panel (SEP) at individual AoA are designed with the knowledge of respective rigid airfoil flow characteristics. Stemming from the analysis of noise reduction potential of SEP configurations using a reduced-order modeling approach, a distributed surface compliance (DSC) airfoil configuration utilizing three resonating panels is designed to attain airfoil tonal noise reduction over entire range of AoA. Comprehensive acoustic analyses establish that the DSC airfoil could provide a maximum noise reduction ranging from 3 to 7 dB without any sacrifice in airfoil aerodynamics. The extent of noise reduction with DSC airfoil is found dependent on the flow-induced modal responses of the panels. At lower AoA, the panel(s) resonate in their designed structural modes, which remarkably weaken the flow instabilities convecting over the airfoil suction surface and eventually airfoil noise radiation. At higher AoA, the panel responses deviate from their designed structural mode shapes but could still give less noise reduction. Therefore, the designed DSC airfoil shows a feasible concept for tonal noise reduction over a wide range of operational AoA, which substantiates its applicability for aerodynamic devices at low Reynolds numbers. | en_US |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | Physics of fluids, Apr. 2022, v. 34, no. 4, 46113 | en_US |
dcterms.isPartOf | Physics of fluids | en_US |
dcterms.issued | 2022-04 | - |
dc.identifier.scopus | 2-s2.0-85129241708 | - |
dc.identifier.ros | 2021003376 | - |
dc.identifier.eissn | 1089-7666 | en_US |
dc.identifier.artn | 46113 | en_US |
dc.description.validate | 202209 bchy | en_US |
dc.description.oa | Version of Record | en_US |
dc.identifier.FolderNumber | CDCF_2021-2022 | - |
dc.description.fundingSource | RGC | en_US |
dc.description.fundingSource | Others | en_US |
dc.description.fundingText | Philip K. H. Wong Foundation; The Hong Kong Polytechnic University; University Research Facility in Big Data Analytics (UBDA) at PolyU | en_US |
dc.description.pubStatus | Published | en_US |
dc.identifier.OPUS | 68383042 | - |
dc.description.oaCategory | VoR allowed | en_US |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
5.0087350.pdf | 9.99 MB | Adobe PDF | View/Open |
Page views
45
Last Week
0
0
Last month
Citations as of Oct 13, 2024
Downloads
60
Citations as of Oct 13, 2024
SCOPUSTM
Citations
5
Citations as of Oct 17, 2024
WEB OF SCIENCETM
Citations
4
Citations as of Oct 17, 2024
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.