Aeroacoustic Characteristics of a Strut-braced High-lift Device

Luke Bowen*, Hasan Kamliya Jawahar, Mahdi Azarpeyvand

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

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Abstract

The aerodynamic and aeroacoustic performance of a strut-based high-lift device were 5 evaluated and demonstrated for six different strut models. The primary objective of the study 6 was to investigate the impact of strut modifications on reducing noise levels. The aerodynamic 7 characteristics are presented with the aid of surface pressure distribution on the airfoil that 8 remained consistent across all the tested configurations. The aeroacoustic results are presented 9 as the near-field surface pressure fluctuations and far-field noise measurements to attain a 10 profound comprehension of the noise generation mechanism. Although the Albatros strut 11 exhibited the greatest reduction in tonal noise, the directivity pattern and the overall sound 12 pressure level of the radiated noise demonstrated that the medium height strut configuration can 13 achieve noise reduction of up to 8 dB. The near-field unsteady surface pressure measurements 14 are suggestive of harmonic oscillations. The coherence studies carried out have shown a 15 decrease in the tonal coherence for the small height strut configuration while the velocity field 16 measurements performed in the wake of the high-lift device show no significant variation in 17 flow patterns between different strut configurations.
Original languageEnglish
Article number109084
JournalAerospace Science and Technology
Volume148
Early online date29 Apr 2024
DOIs
Publication statusPublished - 1 May 2024

Bibliographical note

The content of this document reflects only the author's view. The European Commission and Clean Sky 2 Joint Undertaking (CS2JU) are not responsible for any use that may be made of the information it contains. The U-HARWARD Project has received funding from the Clean Sky 2 Joint Undertaking, under the European Union's Horizon 2020 research and innovation Program under Grant Agreement number: 886552 - H2020-CS2-CFP10-2019-01. The first author (L.B.) would like to acknowledge the support of EPSRC via Grant No. EP/S013024/1.

Publisher Copyright:
© 2024

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