Aerofoil broadband noise reductions through double-wavelength leading-edge serrations : A new control concept
- Submitting institution
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University of Southampton
- Unit of assessment
- 12 - Engineering
- Output identifier
- 48692610
- Type
- D - Journal article
- DOI
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10.1017/jfm.2018.620
- Title of journal
- Journal of Fluid Mechanics
- Article number
- -
- First page
- 131
- Volume
- 855
- Issue
- -
- ISSN
- 0022-1120
- Open access status
- Compliant
- Month of publication
- September
- Year of publication
- 2018
- URL
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- Supplementary information
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- Request cross-referral to
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- Output has been delayed by COVID-19
- No
- COVID-19 affected output statement
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- Forensic science
- No
- Criminology
- No
- Interdisciplinary
- No
- Number of additional authors
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3
- Research group(s)
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-
- Proposed double-weighted
- No
- Reserve for an output with double weighting
- No
- Additional information
- Turbulence–aerofoil interaction is the dominant noise generation mechanism in modem turbofan engines. This paper described a new noise control principle capable of providing substantially better noise reductions than the maximum noise reduction achievable using conventional aerofoil leading edge serration geometries. This work was the first non-conventional geometry and has since led to research into the development of a new family of leading-edge profiles based on the same noise reduction principle, principally at the Universities of Cambridge and Sherbrook, and ONERA in France. Four patents are being filed by Rolls-Royce on behalf of Southampton University (US20170022820, US20170241278, 1809353.4, 1718069.6).
- Author contribution statement
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- Non-English
- No
- English abstract
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