Slit Tube Probe and Multi-Port Method for the Acoustical Characterisation of Ducted Axial Fans
Riedel J, Becker S, Jacob S (2025)
Publication Language: English
Publication Type: Conference contribution, Conference Contribution
Publication year: 2025
Publisher: Sigel Press
Pages Range: 359-369
Conference Proceedings Title: Proceedings of FAN 2025
Event location: Antibes-Juan-Les-Pins
ISBN: 978-1-905941-32-2
Open Access Link: https://www.fan2025.org/doc/FAN2025 -PROCEEDINGS - ISBN 978-1-905941-32-2.pdf
Abstract
Characterizing the acoustics of ducted fans is challenging in practice, due to the presence of multi ple superimposed modes and the complex flow conditions. In this paper we compare two methods that are based on different principles, namely the slit tube probe measurement technique proposed in the international standard and the multi-port method. On a modular test rig, a 12-bladed ax ial fan is characterised using both measurement techniques. The comparison of the measurement results at two operating points shows that both measurement techniques can be suitable for the acoustic characterisation of ducted fans. The advantages and disadvantages of the two methods are discussed in detail to enable engineers to select the best method for their application.
Authors with CRIS profile
Jörg Riedel
Lehrstuhl für Prozessmaschinen und Anlagentechnik (iPAT)
Stefan Becker
Lehrstuhl für Strömungsmechanik (LSTM)
Involved external institutions
Germany (DE)How to cite
APA:
Riedel, J., Becker, S., & Jacob, S. (2025). Slit Tube Probe and Multi-Port Method for the Acoustical Characterisation of Ducted Axial Fans. In Proceedings of FAN 2025 (pp. 359-369). Antibes-Juan-Les-Pins, FR: Sigel Press.
MLA:
Riedel, Jörg, Stefan Becker, and Stefan Jacob. "Slit Tube Probe and Multi-Port Method for the Acoustical Characterisation of Ducted Axial Fans." Proceedings of the 8th International Conference on Fan Noise, Aerodynamics, Applications and Systems, Antibes-Juan-Les-Pins Sigel Press, 2025. 359-369.
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