TY - GEN
T1 - EFFECT OF ROUGHNESS ON THE AEROACOUSTIC PERFORMANCE OF ROTOR NOISE AT LOW REYNOLDS NUMBER
AU - Beausse, Yoann
AU - Cotté, Benjamin
AU - Doaré, Olivier
AU - Pascal, Caroline
AU - Toralba, Thibault
AU - Chapoutot, Alexandre
N1 - Publisher Copyright:
© 2023 Beausse et al. This is an open-access article distributed under the terms of the Creative Commons Attribution 3.0 Unported License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
PY - 2023/1/1
Y1 - 2023/1/1
N2 - The actual and future multiplication of unmanned aerial vehicles (UAV) in urban settings calls for a better understanding and optimization of the aeroacoustic noise produced by their rotors. This phenomenon is associated with low Reynolds numbers, compared to what is usually seen on helicopters for example. At these Reynolds numbers, both tonal and broadband components are present, and the question of the transition to turbulence in the boundary layers (in particular on the pressure side) is of critical importance. In this experimental study, the use of 3D printing techniques allows for the comparison of multiple rotor models, with an emphasis on roughness heights, their influence on boundary layer transition and on the final emitted noise. Measurements are performed in an anechoic chamber and include noise levels around the rotor and thrust levels.
AB - The actual and future multiplication of unmanned aerial vehicles (UAV) in urban settings calls for a better understanding and optimization of the aeroacoustic noise produced by their rotors. This phenomenon is associated with low Reynolds numbers, compared to what is usually seen on helicopters for example. At these Reynolds numbers, both tonal and broadband components are present, and the question of the transition to turbulence in the boundary layers (in particular on the pressure side) is of critical importance. In this experimental study, the use of 3D printing techniques allows for the comparison of multiple rotor models, with an emphasis on roughness heights, their influence on boundary layer transition and on the final emitted noise. Measurements are performed in an anechoic chamber and include noise levels around the rotor and thrust levels.
KW - aeroacoustics
KW - boundary layer transition
KW - rotor noise
KW - roughness
UR - https://www.scopus.com/pages/publications/85191241146
M3 - Conference contribution
AN - SCOPUS:85191241146
T3 - Proceedings of Forum Acusticum
BT - Forum Acusticum 2023 - 10th Convention of the European Acoustics Association, EAA 2023
PB - European Acoustics Association, EAA
T2 - 10th Convention of the European Acoustics Association, EAA 2023
Y2 - 11 September 2023 through 15 September 2023
ER -