Aerodynamic Noise Prediction of Strut-Braced Wing Aircraft

Sticchi, E.; Ragni, D.; Casalino, D.; Avallone, F.

Aerodynamic Noise Prediction of Strut-Braced Wing Aircraft

Conference paper (2024)

Authors

E. Sticchi Wind Energy

D. Ragni Wind Energy

D. Casalino Wind Energy

F. Avallone Politecnico di Torino

Research Group

Wind Energy

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Published Date

2024

Language

English

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Research Group

Wind Energy

Abstract

Motivated by the potential benefit of Strut-Braced Wing (SBW) configurations in reducing fuel burn, this manuscript investigates the noise generated by the interaction between the propeller slipstream and the SBW. The flow field on a regional transport aircraft is computed in high-lift condition by means of a high-fidelity Lattice Boltzmann solver with very large eddy simulation approach. The acoustic far field is obtained using the Ffowcs-Williams and Hawkings acoustic analogy. The analysis shows that the main aeroacoustic effect due to the interaction between the SBW and the propeller slipstream is the emergency of a tonal noise scattering from the region bounded by the pressure side of the main wing and the suction side of the strut at twice the blade passing frequency.

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