TY - GEN
T1 - Aeroacoustic-structural interactions of a multi-panel airfoil configuration for tonal noise reduction
AU - Arif, Irsalan
AU - Naseer, Muhammad Rehan
AU - Lam, Garret Chi Yan
AU - Leung, Randolph Chi Kin
N1 - Funding Information:
The authors gratefully acknowledge the support from the Research Grants Council of the Government of Hong Kong Special Administrative Region under grant number 15208520. The first and fourth authors are grateful to a generous research donation from Philip K. H. Wong Foundation under grant number 5-ZH1X (now N-ZH1X). The third author is grateful to stipend support to his study from the Department of Mechanical Engineering, The Hong Kong Polytechnic University.
Publisher Copyright:
© ICA 2022.All rights reserved
PY - 2022/10/25
Y1 - 2022/10/25
N2 - In this paper, a multi-panel airfoil configuration (MPC) is designed to achieve airfoil tonal noise reduction over a wide range of angle of attack (AoA) at a Reynolds number of 50000 and a Mach number of 0.4. The aeroacoustic-structural interactions of the designed airfoil are explored using reduced order modelling (ROM). The range of operational AoA for the present study is chosen from 1° to 7° to analyze the tonal component of airfoil noise. The design methodology of the multi-panel airfoil is based on the preliminary analysis of the rigid airfoil to ascertain the optimum panel locations and their structural properties. Subsequently, an airfoil configuration based on three resonant elastic panels with different structural properties is designed and its noise reduction potential is assessed at varying AoAs. ROM analysis shows a non-linear response in the noise reduction characteristics for the airfoil ranging from 6.75 dB to 7.92 dB over the complete range of AoA. The structural analysis shows a complex vibration pattern for all the panels which clearly indicates the presence of complex structural interaction among the panels for MPC airfoil at varying AoA.
AB - In this paper, a multi-panel airfoil configuration (MPC) is designed to achieve airfoil tonal noise reduction over a wide range of angle of attack (AoA) at a Reynolds number of 50000 and a Mach number of 0.4. The aeroacoustic-structural interactions of the designed airfoil are explored using reduced order modelling (ROM). The range of operational AoA for the present study is chosen from 1° to 7° to analyze the tonal component of airfoil noise. The design methodology of the multi-panel airfoil is based on the preliminary analysis of the rigid airfoil to ascertain the optimum panel locations and their structural properties. Subsequently, an airfoil configuration based on three resonant elastic panels with different structural properties is designed and its noise reduction potential is assessed at varying AoAs. ROM analysis shows a non-linear response in the noise reduction characteristics for the airfoil ranging from 6.75 dB to 7.92 dB over the complete range of AoA. The structural analysis shows a complex vibration pattern for all the panels which clearly indicates the presence of complex structural interaction among the panels for MPC airfoil at varying AoA.
KW - Aeroacoustics
KW - Tonal noise
KW - Vibrations
UR - http://www.scopus.com/inward/record.url?scp=85162289563&partnerID=8YFLogxK
M3 - Conference article published in proceeding or book
AN - SCOPUS:85153717485
T3 - Proceedings of the International Congress on Acoustics
SP - 164
EP - 168
BT - 24th International Congress on Acoustics, ICA 2022
T2 - 24th International Congress on Acoustics, ICA 2022
Y2 - 24 October 2022 through 28 October 2022
ER -