Prediction of aeroacoustics of deformable bodies with solid or porous surface through a boundary integral formulation

Prediction of aeroacoustics of deformable bodies with solid or porous surface through a boundary integral formulation

Beatrice De Rubeis

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Abstract. Novel boundary integral formulations suitable for the radiation of acoustic pressure from deformable, solid or porous, surfaces in arbitrary motion are theoretically/numerically developed. These will first be applied to a translating wing subject to unsteady bending and torsion. The influence of surface deformation on the evaluated perturbation fields will be assessed for different amplitude and frequency values of the bending and torsion modes. Subsequently, pressure will be radiated from a deformable porous sphere to validate the formulations for this type of surface.

Keywords
Deformable Body, Boundary Integral Formulation, Aeroacoustics

Published online 9/1/2023, 8 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: Beatrice De Rubeis, Prediction of aeroacoustics of deformable bodies with solid or porous surface through a boundary integral formulation, Materials Research Proceedings, Vol. 33, pp 21-28, 2023

DOI: https://doi.org/10.21741/9781644902677-4

The article was published as article 4 of the book Aerospace Science and Engineering

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

References
[1] ICAO, “Environmental Report 2016,” Tech. rep., International Civil Aviation Organization, 2016. URL https://www.icao.int/environmental-protection/Documents/ICAO%20Environmental%20Report%202016.pdf .
[2] EC, “Flightpath 2050, Europe’s Vision for Aviation,” Tech. rep., European Commission, 2011.
[3] Nesbitt, E., “Current engine noise and reduction technology,” CEAS Aeronautical Journal, Vol. 10, No. 1, 2019, pp. 93-100. https://doi.org/10.1007/s13272-019-00381-6
[4] De Vries, R., Brown, M., and Vos, R., “Preliminary sizing method for hybrid-electric distributed-propulsion aircraft,” Journal of Aircraft, Vol. 56, No. 6, 2019, pp. 2172-2188.https://doi.org/10.2514/6.2018-4228
[5] Felder, J., Kim, H., Brown, G., and Kummer, J., “An examination of the effect of boundary layer ingestion on turboelectric distributed propulsion systems,” 49th AIAA aerospace sciences meeting including the new horizons forum and aerospace exposition, 2011, p. 300. https://doi.org/10.2514/6.2011-300
[6] Poggi, C., Bernardini, G., and Gennaretti, M., “Aeroacoustic analysis of wing-mounted propeller arrays,” AIAA AVIATION 2021 FORUM, 2021, p. 2236. https://doi.org/10.2514/6.2021-2236
[7] Farassat, F., “Derivation of Formulations 1 and 1A of Farassat,” Tech. rep., 2007.
[8] Hennes, C. C., and Brentner, K. S., “The effect of blade deformation on rotorcraft acoustics,” Journal of the American Helicopter Society, Vol. 53, No. 4, 2008, pp. 398-411. https://doi.org/10.4050/JAHS.53.398
[9] Lopes, L. V., “Compact assumption applied to monopole term of Farassat’s formulations,” Journal of Aircraft, Vol. 54, No. 5, 2017, pp. 1649-1663. https://doi.org/10.2514/1.C034048
[10] Morino, L., and Gennaretti, M., “Boundary integral equation methods for aerodynamics,” Progress in Astronautics and Aeronautics, Vol. 146, 1992, pp. 279-320. https://doi.org/10.2514/5.9781600866180.0279.0320
[11] Gennaretti, M., Luceri, L., and Morino, L., “A unified boundary integral methodology for aerodynamics and aeroacoustics of rotors,” Journal of Sound and Vibration, Vol. 200, No. 4, 1997, pp. 467-489. https://doi.org/10.1006/jsvi.1996.0713
[12] Testa, C., Poggi, C., Bernardini, G., and Gennaretti, M., “Pressure-field permeable-surface integral formulations for sound scattered by moving bodies,” Journal of Sound and Vibration, Vol. 459, 2019, p. 114860. https://doi.org/10.1016/j.jsv.2019.114860
[13] Gennaretti, M., “Una formulazione integrale di contorno per la trattazione unificata di flussi aeronautici viscosi e potenziali,” Ph.D. thesis, PhD thesis, Department of Applied Mechanics, University of Roma “La Sapienza, 1993 (in Italian).
[14] Gennaretti, M., De Rubeis, B., Poggi, C., and Bernardini, G., “Prediction of Aerodynamics and Aeroacoustics of Deformable Bodies Through a Boundary Integral Formulation,” Atti del XXV Convegno AIMETA, 2022. 5