The present paper proposes the development of surrogate models for the description of acoustic emission of multi-propeller configurations, like those adopted by the vast majority of the Urban-Air-Mobility concepts nowadays under investigation. This approach represents an interesting and efficient solution for the aeroacoustic characterization of electrically-powered propeller array, for which reliable and cost-efficient aeroacoustic models are still lacking, and the application of costly high-fidelity tools is mandatory. The numerical investigation focuses on surrogate models that take into account the effects of geometric parameters, such as propeller hubs relative positions and de-phasing, on the propeller array noise emissions. A well-known Artificial Neural Network metamodelling technique is applied on a numerical database obtained through a boundary integral formulation for the solution of incompressible potential flows around lifting/thrusting bodies, followed by the application of the Farassat 1A boundary integral formulation for the noise field evaluation. Due to the proposed non-standard application of the metamodelling technique applied, particular attention is paid to identifying the best strategy to exploit a database with a minimal number of samples with respect to those managed in the standard application of machine learning technique.
Poggi, C., Rossetti, M., Bernardini, G., Gennaretti, M., & Iemma, U. (2021). Metamodelling techniques for propeller array far-field noise. In Proceedings of INTER-NOISE 2021 - 2021 International Congress and Exposition of Noise Control Engineering (pp.2674-2686). The Institute of Noise Control Engineering of the USA, Inc. [10.3397/IN-2021-2203].
Titolo: | Metamodelling techniques for propeller array far-field noise | |
Autori: | ||
Data di pubblicazione: | 2021 | |
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Citazione: | Poggi, C., Rossetti, M., Bernardini, G., Gennaretti, M., & Iemma, U. (2021). Metamodelling techniques for propeller array far-field noise. In Proceedings of INTER-NOISE 2021 - 2021 International Congress and Exposition of Noise Control Engineering (pp.2674-2686). The Institute of Noise Control Engineering of the USA, Inc. [10.3397/IN-2021-2203]. | |
Handle: | http://hdl.handle.net/11590/398206 | |
Appare nelle tipologie: | 4.1 Contributo in Atti di convegno |