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Aeroacoustic source characterization at fan test facility with spherical harmonics of the half-space

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Název: Aeroacoustic source characterization at fan test facility with spherical harmonics of the half-space
Autoři: Vourakis, Michail, 1993, Zotter, Franz, Brandão, Eric, Zea, Elias
Zdroj: eFläktar, grundförutsättning för eMobilitet II Jasa Express Letters Aeroacoustic source characterization at fan test facility with spherical harmonics of the half-space. 5(5)
Témata: Acoustic measurements and instrumentation, Acoustic signal processing, Acoustical effects, Microphones, Architectural acoustics, Acoustic noise measurement, Acoustical properties, Acoustic ecology, Aeroacoustics, Inverse-square law
Popis: 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.
Popis souboru: electronic
Přístupová URL adresa: 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
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  Data: Aeroacoustic source characterization at fan test facility with spherical harmonics of the half-space
– Name: Author
  Label: Authors
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  Data: <searchLink fieldCode="AR" term="%22Vourakis%2C+Michail%22">Vourakis, Michail</searchLink>, 1993<br /><searchLink fieldCode="AR" term="%22Zotter%2C+Franz%22">Zotter, Franz</searchLink><br /><searchLink fieldCode="AR" term="%22Brandão%2C+Eric%22">Brandão, Eric</searchLink><br /><searchLink fieldCode="AR" term="%22Zea%2C+Elias%22">Zea, Elias</searchLink>
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  Label: Source
  Group: Src
  Data: <i>eFläktar, grundförutsättning för eMobilitet II Jasa Express Letters Aeroacoustic source characterization at fan test facility with spherical harmonics of the half-space</i>. 5(5)
– Name: Subject
  Label: Subject Terms
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Acoustic+measurements+and+instrumentation%22">Acoustic measurements and instrumentation</searchLink><br /><searchLink fieldCode="DE" term="%22Acoustic+signal+processing%22">Acoustic signal processing</searchLink><br /><searchLink fieldCode="DE" term="%22Acoustical+effects%22">Acoustical effects</searchLink><br /><searchLink fieldCode="DE" term="%22Microphones%22">Microphones</searchLink><br /><searchLink fieldCode="DE" term="%22Architectural+acoustics%22">Architectural acoustics</searchLink><br /><searchLink fieldCode="DE" term="%22Acoustic+noise+measurement%22">Acoustic noise measurement</searchLink><br /><searchLink fieldCode="DE" term="%22Acoustical+properties%22">Acoustical properties</searchLink><br /><searchLink fieldCode="DE" term="%22Acoustic+ecology%22">Acoustic ecology</searchLink><br /><searchLink fieldCode="DE" term="%22Aeroacoustics%22">Aeroacoustics</searchLink><br /><searchLink fieldCode="DE" term="%22Inverse-square+law%22">Inverse-square law</searchLink>
– Name: Abstract
  Label: Description
  Group: Ab
  Data: 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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  Data: electronic
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      – Type: doi
        Value: 10.1121/10.0036723
    Languages:
      – Text: English
    Subjects:
      – SubjectFull: Acoustic measurements and instrumentation
        Type: general
      – SubjectFull: Acoustic signal processing
        Type: general
      – SubjectFull: Acoustical effects
        Type: general
      – SubjectFull: Microphones
        Type: general
      – SubjectFull: Architectural acoustics
        Type: general
      – SubjectFull: Acoustic noise measurement
        Type: general
      – SubjectFull: Acoustical properties
        Type: general
      – SubjectFull: Acoustic ecology
        Type: general
      – SubjectFull: Aeroacoustics
        Type: general
      – SubjectFull: Inverse-square law
        Type: general
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      – TitleFull: Aeroacoustic source characterization at fan test facility with spherical harmonics of the half-space
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            NameFull: Vourakis, Michail
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            NameFull: Zotter, Franz
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            NameFull: Brandão, Eric
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            NameFull: Zea, Elias
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            – D: 01
              M: 01
              Type: published
              Y: 2025
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              Value: 5
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              Value: 5
          Titles:
            – TitleFull: eFläktar, grundförutsättning för eMobilitet II Jasa Express Letters Aeroacoustic source characterization at fan test facility with spherical harmonics of the half-space
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