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- Title
Realizing high-efficiency low frequency sound absorption of underwater meta-structures by acoustic siphon effect.
- Authors
Wang, Li Bo; Ma, Cheng Zhi; Wu, Jiu Hui; Liu, Chong Rui
- Abstract
The underwater acoustic siphon effect is proposed in this work, which aims to reveal the basic physical mechanism of high-efficiency sound absorption in meta-structures composed of multiple detuned units. Furthermore, the influence of the area ratio on the underwater acoustic siphon effect is then investigated by finite element simulation (FES) and theoretical calculation. On this basis, a meta-structure with the maximum absorption coefficient of almost 100% and average absorption coefficient of 80% at 600–1400 Hz is achieved. The underwater acoustic siphon effect could provide a better understanding of high-efficiency sound absorption and offer a new perspective in controlling underwater noises.
- Subjects
ABSORPTION of sound; AUDIO frequency; SIPHONS; ABSORPTION coefficients; HELMHOLTZ resonators; UNDERWATER acoustics; UNDERWATER noise; ACOUSTIC emission
- Publication
Modern Physics Letters B, 2021, Vol 35, Issue 19, pN.PAG
- ISSN
0217-9849
- Publication type
Article
- DOI
10.1142/S021798492150319X