Aeroacoustic source characterization at fan test facility with spherical harmonics of the half-space
Artikel i vetenskaplig tidskrift, 2025
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.
Acoustic noise measurement
Aeroacoustics
Inverse-square law
Acoustical effects
Microphones
Acoustic ecology
Acoustic signal processing
Architectural acoustics
Acoustic measurements and instrumentation
Acoustical properties
Författare
Michail Vourakis
Chalmers, Mekanik och maritima vetenskaper, Strömningslära
Franz Zotter
University of Music and Performing Arts Graz
Eric Brandão
Universidade Federal de Santa Maria
Elias Zea
Kungliga Tekniska Högskolan (KTH)
JASA Express Letters
2691-1191 (eISSN)
Vol. 5 5eFläktar, grundförutsättning för eMobilitet II
Energimyndigheten (2020-016065), 2020-10-01 -- 2024-09-30.
Ämneskategorier (SSIF 2025)
Strömningsmekanik
DOI
10.1121/10.0036723
Relaterade dataset
Aeroacoustic source characterization at fan test facility with spherical harmonics of the half-space [dataset]
DOI: 10.5281/zenodo.15292362