Experimental and CFD study of the selected acoustic helicoidal resonator as a final element of an air installation

• Autorzy: Łapka Wojciech , Jakubowski Piotr

Identyfikatory

DOI

10.21008/j.0860-6897.2023.1.12

• Języki publikacji: EN

Abstrakty

EN

The work presents an analysis of the selected helicoidal resonator as the end element of the air installation. Laboratory tests of the acoustic pressure level were performed at the outlet of the air installation in a room for different flow speeds. The measurement methodology in accordance to standards PN-EN ISO 3741 and PN-EN ISO 5135, which describes the acoustic test facilities, instrumentation and procedures to be used for precision grade determination of sound power levels in octave or one-third-octave bands of a noise source in reverberation test rooms. The numerical CFD tests show the shape of the air stream in the function of the distance from the installation outlet for different flow speeds. Due to the helicoidal shape of the analyzed acoustic helicoidal resonator, the air stream also turns, which can be used to effectively mix air in the room.

Słowa kluczowe

EN

acoustic resonator; experiments; duct acoustics; air diffusers; air terminal devices

PL

rezonator akustyczny; doświadczenia; akustyka falowodu; dyfuzor powietrza; elementy wywiewne

• Wydawca: Poznan University of Technology. Institute of Applied Mechanics
• Czasopismo: Vibrations in Physical Systems
• Rocznik: 2023
• Tom: Vol. 34, nr 1
• Strony: art. no. 2023112
• Opis fizyczny: Bibliogr. 20 poz., il. kolor., fot., rys., 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

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• 3. Ran Gao, Kaikai Liu, Angui Li, Zhiyu Fang, Zhigang Yang, Beihua Cong; Study of the shape optimization of a tee guide vane in a ventilation and air-conditioning duct; Building and Environment, 2018, 132, 345-356; DOI: https://doi.org/10.1016/j.buildenv.2018.02.006
• 4. Yu-Cheng Liu, Mihai G Burzo, Scott Sier, Cassandra Ellis; Improved thermal comfort of office occupants through better air diffuser designs; Proceedings of the ASME 2015 International Mechanical Engineering Congress & Exposition, IMECE2015, 2015, November 13-19, Texas, USA
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• 15. 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, 2020
• 16. PN-EN ISO 3741:2011; Acoustics. Determination of sound power levels and sound energy levels of noise sources using sound pressure.Precision methods for reverberation test rooms, 2011
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Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).