Cannard, Marine, Joseph, Phillip, Turner, Jacob, Kim, Jae and Paruchuri, Chaitanya (2020) Physical mechanisms and performance of slitted leading-edge profiles for the reduction of broadband aerofoil interaction noise. Journal of Sound and Vibration, 473, 1-17, [115214]. (doi:10.1016/j.jsv.2020.115214).
Abstract
Aerofoil Turbulence Interaction (ATI) noise is an inviscid phenomenon generated by the impingement of turbulent flows onto the leading-edge of an aerofoil. This paper deals with a novel leading-edge serration geometry, composed of narrow slits, to reduce ATI noise. These profiles have been recently found to provide significantly better noise reductions than conventional leading edge geometries. A numerical and analytic investigation is performed into the mechanism and performance of its noise reduction. The far-field radiation is shown to be influenced by a system of induced vortices affecting the distribution of sources on the flat-plate and by destructive interference between the two sources generated at both ends of the slit. A simple two-source model is developed to predict the far-field noise reduction obtained and compared to straight leading-edge aerofoils.
More information
Identifiers
Catalogue record
Export record
Altmetrics
Contributors
University divisions
- Current Faculties > Faculty of Engineering and Physical Sciences > School of Engineering > Institute of Sound and Vibration Research
Institute of Sound and Vibration Research - Faculties (pre 2018 reorg) > Faculty of Engineering and the Environment (pre 2018 reorg) > Southampton Marine & Maritime Institute (pre 2018 reorg)
- Current Faculties > Faculty of Engineering and Physical Sciences
- Current Faculties > Faculty of Engineering and Physical Sciences > School of Engineering > Institute of Sound and Vibration Research > Acoustics Group
Institute of Sound and Vibration Research > Acoustics Group
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.