The Aerodynamics Phenomena of a Particular Bass-Reflex Port

Garcia-Alcaide VM, Palleja-Cabre S, Castilla R, Gamez-Montero PJ, Romeu J, Pamies T, Amate J, Milan N. The Aerodynamics Phenomena of a Particular Bass-Reflex Port. In: AES Convention 140. Audio Engineering Society; 2016.pp. 257:1-. Available from: https://aes.org/publications/elibrary-page/?id=18161

@inproceedings{GarciaAlcaide2016_18161,
  author = {Garcia-Alcaide, Victor Manuel and Palleja-Cabre, Sergi and Castilla, R. and Gamez-Montero, P. J. and Romeu, Jordi and Pamies, Teresa and Amate, Joan and Milan, Natalia},
  title = {{The Aerodynamics Phenomena of a Particular Bass-Reflex Port}},
  booktitle = {AES Convention 140},
  pages = {257:1-},
  year = {2016},
  month = may,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=18161}
}

TY  - CPAPER
TI  - The Aerodynamics Phenomena of a Particular Bass-Reflex Port
AU  - Garcia-Alcaide, Victor Manuel
AU  - Palleja-Cabre, Sergi
AU  - Castilla, R.
AU  - Gamez-Montero, P. J.
AU  - Romeu, Jordi
AU  - Pamies, Teresa
AU  - Amate, Joan
AU  - Milan, Natalia
T2  - AES Convention 140
SP  - 1
M1  - Paper 257
PY  - 2016
DA  - 2016/05/06
UR  - https://aes.org/publications/elibrary-page/?id=18161
PB  - Audio Engineering Society
LA  - en
AB  - The aim of this paper is to study the aerodynamics phenomena of a particular bass-reflex port that causes unwanted noise in the audible frequency range. After discarding structural and mechanical vibration issues, the hypothesis that vortex shedding could be the source of the noise has been considered. Experimental and numerical evidences of the vortex, an analysis of its noise and the similarities between the real performance and the simulated one are presented. The simulations have been performed with axisymmetric geometries with the open source OpenFOAM toolbox. Additionally, three different experiments were carried out. First, acoustic signal experiments were done to analyze the response of the bass-reflex ports. Second, a mechanical vibration was tested in order to discard this source of noise. A good agreement has been found between numerical and experimental results, especially in the frequency band of the detected noise, around 1200 Hz. The presented CFD approach has proved a useful and cost-effective tool to face this kind of phenomena.
ER  -