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Communication Dans Un Congrès Année : 2016

Characterisation and modelling of axial fan noise

Résumé

This paper presents experimental data concerning the noise produced by an axial fan. Acoustic measurements have been taken with point microphones and a microphone array both with and without a grid at the entrance to the fan to examine the e↵ect of incoming turbulence levels on noise. The acoustic data are used to evaluate a strip-wise turbulent in-flow analytical broadband noise model. Two propagation models are employed in the analytical model to predict far-field noise. The first is based on the spherical spreading of acoustic waves and the second uses an experimentally measured transfer function. The best results are obtained with the experimental transfer function employed in the strip-wise noise model as it can recreate some of the finer spectral features of the recorded noise.
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Dates et versions

hal-01405701 , version 1 (30-11-2016)

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Beatrice Faverjon, Jeoffrey Fischer, Con J. Doolan, Danielle Moreau, Zebb Prime. Characterisation and modelling of axial fan noise. 22nd AIAA/CEAS Aeroacoustics Conference, May 2016, Lyon, France. ⟨10.2514/MAERO16⟩. ⟨hal-01405701⟩
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