Fluid Dynamics Analysis of Ported Loudspeakers

Backman J. Fluid Dynamics Analysis of Ported Loudspeakers. In: AES Convention 141. Audio Engineering Society; 2016. Paper 9617. Available from: https://aes.org/publications/elibrary-page/?id=18421

@inproceedings{Backman2016_18421,
  author = {Backman, Juha},
  title = {{Fluid Dynamics Analysis of Ported Loudspeakers}},
  booktitle = {AES Convention 141},
  note = {Paper 9617},
  year = {2016},
  month = sep,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=18421}
}

TY  - CPAPER
TI  - Fluid Dynamics Analysis of Ported Loudspeakers
AU  - Backman, Juha
T2  - AES Convention 141
M1  - Paper 9617
PY  - 2016
DA  - 2016/09/06
UR  - https://aes.org/publications/elibrary-page/?id=18421
PB  - Audio Engineering Society
LA  - en
AB  - The small-signal performance of ported loudspeakers is described in an excellent way by traditional models, such as lumped parameters, waveguide models, or numerical solutions of the acoustic wave equation. However, the acoustic models are clearly insufficient to predict the nonlinear behavior of ported enclosures. This paper presents the results of a computational fluid dynamics analysis of an unlined ported enclosure, focusing on the behavior around the tuning frequency. The results indicate that the vortex formation around the port ends has a significant effect already at a relatively low flow velocities and that the transient behavior of the vortex field can differ from that predicted by the acoustical solution.
ER  -