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http://bura.brunel.ac.uk/handle/2438/26138| Title: | LES–RANS Study of Serrated Nozzle Jet Aeroacoustics for an Installed Ultra-High-Bypass-Ratio Aeroengine |
| Authors: | Wang, ZN Tyacke, JC Tucker, PG |
| Issue Date: | 28-Jun-2021 |
| Publisher: | American Institute of Aeronautics and Astronautics (AIAA) |
| Citation: | Wang, Z.N. Tyacke, J.C. and Tucker, P.G.. (2021) 'LES–RANS Study of Serrated Nozzle Jet Aeroacoustics for an Installed Ultra-High-Bypass-Ratio Aeroengine', AIAA Journal, 59 (10), pp. 4155 - 4165. doi: 10.2514/1.J060447. |
| Abstract: | Jet noise is amplified at low frequencies when the jet is installed under a wing. Serrations are designed at the nozzle exit to mitigate installation noise generation. In this paper, hybrid large-eddy simulation (LES) and Reynoldsaveraged Navier–Stokes (RANS) is performed to investigate the serration effects on installed jet flows and acoustics in an industrially relevant configuration: an ultra-high-bypass-ratio aeroengine mounted under a three-dimensional wing. The results show that the serrations are able to weaken jet and wing interactions, and consequently reduce farfield installation noise. The noise reduction mechanisms have been sought through the quadrupole sources in the jet plume and evanescent pressure wave scattering at the wing trailing edge. |
| URI: | https://bura.brunel.ac.uk/handle/2438/26138 |
| DOI: | https://doi.org/10.2514/1.J060447 |
| ISSN: | 0001-1452 |
| Other Identifiers: | ORCID iD: James C. Tyacke https://orcid.org/0000-0001-7220-7711 |
| Appears in Collections: | Dept of Mechanical and Aerospace Engineering Research Papers |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| FullText.pdf | This is the accepted manuscript version of an article which has been published in final form on AIAA Electronic Library at https://arc.aiaa.org/doi/full/10.2514/1.J060447. Copyright © 2021 by the authors. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission. All requests for copying and permission to reprint should be submitted to CCC at www.copyright.com; employ the eISSN 1533-385X to initiate your request. See also AIAA Rights and Permissions www.aiaa.org/randp (https://www.aiaa.org/publications/books/Publication-Policies#AIAA_Author_Rights_and_Responsibilities:_Self-Archiving_and_Posting_Policy). | 4.93 MB | Adobe PDF | View/Open |
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