Noise Reduction of Spiral Ducts

• Autorzy: Łapka W. , Cempel C.
• Języki publikacji: EN

Abstrakty

EN

The paper presents noise reduction (NR) of spiral ducts as a result of computational modeling of acoustic wave propagation. Three-dimensional models were created with the finite element method in COMSOL Multiphysics version 3.3. Nine models of spiral ducts with 1–9 spiral leads were considered. Time-harmonic analysis was used to predict NR, which was shown in spectral and interval frequency bands. Spiral duct performance can be seen as a comparison of NR before and after a change from a circular to a spiral duct.

Słowa kluczowe

EN

spiral duct; noise reduction; sound propagation; computational modeling

• Wydawca: Taylor & Francis
• Czasopismo: International Journal of Occupational Safety and Ergonomics
• Rocznik: 2007
• Tom: Vol. 13, No. 4
• Strony: 419--426
• Opis fizyczny: Bibliogr. 4 poz., rys., tab., wykr.

Twórcy

autor

Łapka W.

• Institute of Applied Mechanics, Poznań University of Technology, Poznań, Poland

autor

Cempel C.

• Institute of Applied Mechanics, Poznań University of Technology, Poznań, Poland

Bibliografia

• 1.COMSOL Multiphysics version 3.3. Acoustics module. User’s guide and model library. Stockholm, Sweden: COMSOL.
• 2.Ver IL, Beranek LL. Noise and vibration control engineering. 2nd ed. Hoboken, NJ, USA: Wiley; 2005.
• 3.Munjal ML. Acoustics of ducts and mufflers with application to exhaust and ventilation system design. Calgary, Alta., Canada; Wiley; 1987.
• 4.Łapka W, Parnasow W, Cempel C. Principle of approximate superposition in designing acoustic mufflers. In: XXII Symposium. Vibrations in Physical Systems. Poznań, Poland: Agencja Reklamowa Comprint; 2006, p. 237–42.