Aeroacoustic source characterization at fan test facility with spherical harmonics of the half-space
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| Titel: | Aeroacoustic source characterization at fan test facility with spherical harmonics of the half-space |
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| Autoren: | Vourakis, Michail, 1993, Zotter, Franz, Brandão, Eric, Zea, Elias |
| Quelle: | eFläktar, grundförutsättning för eMobilitet II Jasa Express Letters Aeroacoustic source characterization at fan test facility with spherical harmonics of the half-space. 5(5) |
| Schlagwörter: | Acoustic measurements and instrumentation, Acoustic signal processing, Acoustical effects, Microphones, Architectural acoustics, Acoustic noise measurement, Acoustical properties, Acoustic ecology, Aeroacoustics, Inverse-square law |
| Beschreibung: | Acoustic measurements of sources in non-ideal acoustic environments, often the case in industrial product development, issue challenges in source characterization. This study investigates the room-acoustical effects of a bespoke fan test facility on aeroacoustic source characterization via a second-order scheme of spherical harmonics of the half-space. An experimental test of a compact monopole-like sound source reveals the influence of the room's transfer function at low frequencies. Applying the scheme to a benchmark case of a low-pressure axial fan at different loading conditions showcases a satisfactory estimation of sound power and directivity. |
| Dateibeschreibung: | electronic |
| Zugangs-URL: | https://research.chalmers.se/publication/546812 https://research.chalmers.se/publication/547705 https://research.chalmers.se/publication/546918 https://research.chalmers.se/publication/547705/file/547705_Fulltext.pdf |
| Datenbank: | SwePub |
Nájsť tento článok vo Web of Science | Abstract: | Acoustic measurements of sources in non-ideal acoustic environments, often the case in industrial product development, issue challenges in source characterization. This study investigates the room-acoustical effects of a bespoke fan test facility on aeroacoustic source characterization via a second-order scheme of spherical harmonics of the half-space. An experimental test of a compact monopole-like sound source reveals the influence of the room's transfer function at low frequencies. Applying the scheme to a benchmark case of a low-pressure axial fan at different loading conditions showcases a satisfactory estimation of sound power and directivity. |
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| ISSN: | 26911191 |
| DOI: | 10.1121/10.0036723 |