Airfoil-Shaped Acoustic Metamaterial for Sound Insulation and Air Ventilation

Seojoon Park

doi:doi:10.11648/j.ijmsa.20221105.12

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Airfoil-Shaped Acoustic Metamaterial for Sound Insulation and Air Ventilation

Seojoon Park

Published in International Journal of Materials Science and Applications (Volume 11, Issue 5)

Received: 26 October 2022 Accepted: 16 November 2022 Published: 30 November 2022

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Abstract

In this paper, we introduce the new concept of acoustic silencers that disable noise to pass but permit the air ventilation. Conventional sound proofing structures prevent air ventilation between the interior and exterior where the sound is generated and propagated. Therefore, those sound proofing structures are hardly utilized in air flowing duct system or heat exchanging system with the needs of sound insulation. A design proposed in this paper has a shape of airfoil with narrow neck and empty cavity so that it acts like a Helmholtz resonator based acoustic metamaterial. This structure can be inserted in the air flowing duct and reduce the sound passing through the duct but does not resist the air flowing in the duct. Two different combinations of radii and cavities interact with each other so that the opposite phase of sound radiated from the neck makes the destructive interference, and the high transmission loss can be realized concludingly. The airfoil-shaped acoustic metamaterial can provide large open area and low flow resistance due to its geometrical concept, it is optimized in air ventilation as well. It is expected that the acoustic metastructure of the airfoil shape can be applied to various engineering problems that simultaneously deal with flow problems and noise problems, such as HVAC systems.

Published in	International Journal of Materials Science and Applications (Volume 11, Issue 5)
DOI	10.11648/j.ijmsa.20221105.12
Page(s)	109-112
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2022. Published by Science Publishing Group

Keywords

Airfoil, Acoustic Metamaterial, Air Ventilation, Sound Insulation

References

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[9]	Reza Ghaffarivardavagh, Jacob Nikolajczyk, Stephan Anderson and Xin Zhang (2019), Ultra-open acoustic metamaterial silencer based on Fano-like interference, Physical Review B 99, 024302.
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APA Style

Seojoon Park. (2022). Airfoil-Shaped Acoustic Metamaterial for Sound Insulation and Air Ventilation. International Journal of Materials Science and Applications, 11(5), 109-112. https://doi.org/10.11648/j.ijmsa.20221105.12

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ACS Style

Seojoon Park. Airfoil-Shaped Acoustic Metamaterial for Sound Insulation and Air Ventilation. Int. J. Mater. Sci. Appl. 2022, 11(5), 109-112. doi: 10.11648/j.ijmsa.20221105.12

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AMA Style

Seojoon Park. Airfoil-Shaped Acoustic Metamaterial for Sound Insulation and Air Ventilation. Int J Mater Sci Appl. 2022;11(5):109-112. doi: 10.11648/j.ijmsa.20221105.12

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@article{10.11648/j.ijmsa.20221105.12,
  author = {Seojoon Park},
  title = {Airfoil-Shaped Acoustic Metamaterial for Sound Insulation and Air Ventilation},
  journal = {International Journal of Materials Science and Applications},
  volume = {11},
  number = {5},
  pages = {109-112},
  doi = {10.11648/j.ijmsa.20221105.12},
  url = {https://doi.org/10.11648/j.ijmsa.20221105.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmsa.20221105.12},
  abstract = {In this paper, we introduce the new concept of acoustic silencers that disable noise to pass but permit the air ventilation. Conventional sound proofing structures prevent air ventilation between the interior and exterior where the sound is generated and propagated. Therefore, those sound proofing structures are hardly utilized in air flowing duct system or heat exchanging system with the needs of sound insulation. A design proposed in this paper has a shape of airfoil with narrow neck and empty cavity so that it acts like a Helmholtz resonator based acoustic metamaterial. This structure can be inserted in the air flowing duct and reduce the sound passing through the duct but does not resist the air flowing in the duct. Two different combinations of radii and cavities interact with each other so that the opposite phase of sound radiated from the neck makes the destructive interference, and the high transmission loss can be realized concludingly. The airfoil-shaped acoustic metamaterial can provide large open area and low flow resistance due to its geometrical concept, it is optimized in air ventilation as well. It is expected that the acoustic metastructure of the airfoil shape can be applied to various engineering problems that simultaneously deal with flow problems and noise problems, such as HVAC systems.},
 year = {2022}
}

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TY  - JOUR
T1  - Airfoil-Shaped Acoustic Metamaterial for Sound Insulation and Air Ventilation
AU  - Seojoon Park
Y1  - 2022/11/30
PY  - 2022
N1  - https://doi.org/10.11648/j.ijmsa.20221105.12
DO  - 10.11648/j.ijmsa.20221105.12
T2  - International Journal of Materials Science and Applications
JF  - International Journal of Materials Science and Applications
JO  - International Journal of Materials Science and Applications
SP  - 109
EP  - 112
PB  - Science Publishing Group
SN  - 2327-2643
UR  - https://doi.org/10.11648/j.ijmsa.20221105.12
AB  - In this paper, we introduce the new concept of acoustic silencers that disable noise to pass but permit the air ventilation. Conventional sound proofing structures prevent air ventilation between the interior and exterior where the sound is generated and propagated. Therefore, those sound proofing structures are hardly utilized in air flowing duct system or heat exchanging system with the needs of sound insulation. A design proposed in this paper has a shape of airfoil with narrow neck and empty cavity so that it acts like a Helmholtz resonator based acoustic metamaterial. This structure can be inserted in the air flowing duct and reduce the sound passing through the duct but does not resist the air flowing in the duct. Two different combinations of radii and cavities interact with each other so that the opposite phase of sound radiated from the neck makes the destructive interference, and the high transmission loss can be realized concludingly. The airfoil-shaped acoustic metamaterial can provide large open area and low flow resistance due to its geometrical concept, it is optimized in air ventilation as well. It is expected that the acoustic metastructure of the airfoil shape can be applied to various engineering problems that simultaneously deal with flow problems and noise problems, such as HVAC systems.
VL  - 11
IS  - 5
ER  -

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Author Information

Seojoon Park

Daegu International School, Daegu, Republic of Korea

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APA Style

Seojoon Park. (2022). Airfoil-Shaped Acoustic Metamaterial for Sound Insulation and Air Ventilation. International Journal of Materials Science and Applications, 11(5), 109-112. https://doi.org/10.11648/j.ijmsa.20221105.12

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ACS Style

Seojoon Park. Airfoil-Shaped Acoustic Metamaterial for Sound Insulation and Air Ventilation. Int. J. Mater. Sci. Appl. 2022, 11(5), 109-112. doi: 10.11648/j.ijmsa.20221105.12

Copy | Download

AMA Style

Seojoon Park. Airfoil-Shaped Acoustic Metamaterial for Sound Insulation and Air Ventilation. Int J Mater Sci Appl. 2022;11(5):109-112. doi: 10.11648/j.ijmsa.20221105.12

Copy | Download

@article{10.11648/j.ijmsa.20221105.12,
  author = {Seojoon Park},
  title = {Airfoil-Shaped Acoustic Metamaterial for Sound Insulation and Air Ventilation},
  journal = {International Journal of Materials Science and Applications},
  volume = {11},
  number = {5},
  pages = {109-112},
  doi = {10.11648/j.ijmsa.20221105.12},
  url = {https://doi.org/10.11648/j.ijmsa.20221105.12},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmsa.20221105.12},
  abstract = {In this paper, we introduce the new concept of acoustic silencers that disable noise to pass but permit the air ventilation. Conventional sound proofing structures prevent air ventilation between the interior and exterior where the sound is generated and propagated. Therefore, those sound proofing structures are hardly utilized in air flowing duct system or heat exchanging system with the needs of sound insulation. A design proposed in this paper has a shape of airfoil with narrow neck and empty cavity so that it acts like a Helmholtz resonator based acoustic metamaterial. This structure can be inserted in the air flowing duct and reduce the sound passing through the duct but does not resist the air flowing in the duct. Two different combinations of radii and cavities interact with each other so that the opposite phase of sound radiated from the neck makes the destructive interference, and the high transmission loss can be realized concludingly. The airfoil-shaped acoustic metamaterial can provide large open area and low flow resistance due to its geometrical concept, it is optimized in air ventilation as well. It is expected that the acoustic metastructure of the airfoil shape can be applied to various engineering problems that simultaneously deal with flow problems and noise problems, such as HVAC systems.},
 year = {2022}
}

Copy | Download

TY  - JOUR
T1  - Airfoil-Shaped Acoustic Metamaterial for Sound Insulation and Air Ventilation
AU  - Seojoon Park
Y1  - 2022/11/30
PY  - 2022
N1  - https://doi.org/10.11648/j.ijmsa.20221105.12
DO  - 10.11648/j.ijmsa.20221105.12
T2  - International Journal of Materials Science and Applications
JF  - International Journal of Materials Science and Applications
JO  - International Journal of Materials Science and Applications
SP  - 109
EP  - 112
PB  - Science Publishing Group
SN  - 2327-2643
UR  - https://doi.org/10.11648/j.ijmsa.20221105.12
AB  - In this paper, we introduce the new concept of acoustic silencers that disable noise to pass but permit the air ventilation. Conventional sound proofing structures prevent air ventilation between the interior and exterior where the sound is generated and propagated. Therefore, those sound proofing structures are hardly utilized in air flowing duct system or heat exchanging system with the needs of sound insulation. A design proposed in this paper has a shape of airfoil with narrow neck and empty cavity so that it acts like a Helmholtz resonator based acoustic metamaterial. This structure can be inserted in the air flowing duct and reduce the sound passing through the duct but does not resist the air flowing in the duct. Two different combinations of radii and cavities interact with each other so that the opposite phase of sound radiated from the neck makes the destructive interference, and the high transmission loss can be realized concludingly. The airfoil-shaped acoustic metamaterial can provide large open area and low flow resistance due to its geometrical concept, it is optimized in air ventilation as well. It is expected that the acoustic metastructure of the airfoil shape can be applied to various engineering problems that simultaneously deal with flow problems and noise problems, such as HVAC systems.
VL  - 11
IS  - 5
ER  -

Copy | Download