Experimental aeroacoustic studies of selected three types of helicoidal resonators

• Autorzy: Łapka Wojciech , Jakubowski Piotr

Identyfikatory

DOI

10.21008/j.0860-6897.2024.1.02

• Języki publikacji: EN

Abstrakty

EN

The paper presents experimental studies of selected three types of helicoidal resonators carried out on an aeroacoustic laboratory stand with the use of pink noise and a duct terminated with a reverberation chamber. The same ratio s/d = 1.976 is considered for three numbers of helicoidal turns n = 0.671, n = 0.695 and n = 1.0. The results of the acoustic attenuation performance depending on the air flow velocity were compared in relation to the numerical tests carried out, which resulted in a decrease in resonance frequencies with an increase in the air flow velocity. The measurements were carried out with a high resolution of the FFT spectrum in order to illustrate the changes in the acoustic attenuation performance as accurately as possible. One-third octave bands of flow noise studies were also carried out.

Słowa kluczowe

EN

aeroacoustics; helicoidal resonator; flow noise; experiment; sound attenuation; duct acoustics

PL

aeroakustyka; rezonator helikoidalny; hałas przepływu; eksperyment; tłumienie dźwięku

• Wydawca: Poznan University of Technology. Institute of Applied Mechanics
• Czasopismo: Vibrations in Physical Systems
• Rocznik: 2024
• Tom: Vol. 35, nr 1
• Strony: art. no. 2024102
• Opis fizyczny: Bibliogr. 8 poz., il. kolor., fot., wykr.

Twórcy

autor

Łapka Wojciech

• Institute of Applied Mechanics, Faculty of Mechanical Engineering, Poznan University of Technology, Jana Pawła II 24, 60-965 Poznań, Poland

• https://orcid.org/0000-0001-7330-4644

autor

Jakubowski Piotr

• Maritime Advanced Research Centre CTO S.A. Environmental Laboratories Division, The Vibroacoustic Laboratory, 65 Szczecińska Str., 80-392 Gdańsk, Poland

• https://orcid.org/0000-0001-9927-202X

Bibliografia

• 1. M.L. Munjal; Acoustics of Ducts and Mufflers with Application to Exhaust and Ventilation System Design; Calgary, Canada, John Wiley & Sons, 1987
• 2. I.L. Ver, L.L. Beranek; Noise and vibration control engineering; 2nd edition, Hoboken, John Wiley & Sons, New Jersey, USA, 2006
• 3. M.H. Khairuddin, M.F.M. Said, A.A. Dahlan, K.A. Kadir; Review on resonator and muffler configuration acoustics; Archives of Acoustics, 2018, 43(3), 369-384; DOI: 10.24425/123909
• 4. W. Łapka; Numerical study of acoustic-structure interaction of selected helicoidal resonator with flexible helicoidal profile; Archives of Acoustics, 2018, 43(1), 83-92
• 5. W. Łapka; Numerical Aeroacoustics Research of Transmission Loss Characteristics Change of Selected Helicoidal Resonators due to Different Air Flow Velocities; Vibrations in Physical Systems, 2012, 25, 267-272
• 6. W. Łapka; A three-dimensional finite element analysis of tuning the selected acoustic helicoidal resonator by the change of its mandrel diameter; Applied Acoustics, 2022, 185, 108443; DOI: 10.1016/j.apacoust.2021.108443
• 7. W. Łapka, P. Jakubowski; Experimental and CFD study of the selected acoustic helicoidal resonator as a final element of an air installation; Vibrations in Physical Systems, 2023, 34(1), 2023112; DOI: 10.21008/j.0860-6897.2023.1.12
• 8. PN-EN ISO 5135:2020; Acoustics. Determination of sound power levels of noise from air-terminal devices, air-terminal units, dampers and valves by measurement in a reverberation test room

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025).