- Tytuł:
- Numerical analysis of sound propagation in selected acoustical system with helicoidal resonator placed in cylindrical duct with 90 degree elbow
- Autorzy:
- Łapka, W.
- Powiązania:
- https://bibliotekanauki.pl/articles/127803.pdf
- Data publikacji:
- 2018
- Wydawca:
- Politechnika Poznańska. Instytut Mechaniki Stosowanej
- Tematy:
-
helicoidal resonator
sound propagation
duct elbow
ducted system
rezonator helikoidalny
propagacja dźwięku
łuk kanału
układ kanałowy - Opis:
- This paper concerns to the numerical analysis of transmission loss of selected acoustical helicoidal resonator placed in cylindrical duct close to the elbow. The change of acoustic attenuation performance of helicoidal resonator is observed with the change of the degree of rotation of cylindrical duct elbow. The finite element method was used to calculate the acoustical system in the COMSOL Multiphysics computational environment. The results show that the change of rotation of elbow or rotation of helicoidal profile can change the resonance frequency, and thus the tuning options are extended when applying helicoidal resonators in ducted systems.
- Źródło:
-
Vibrations in Physical Systems; 2018, 29; 1-6
0860-6897 - Pojawia się w:
- Vibrations in Physical Systems
- Dostawca treści:
- Biblioteka Nauki
Artykuł