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Y. Pene, Y. Horyn, and C. Combet, "Non-linear acoustic losses prediction in vented loudspeaker using computational fluid dynamic simulation," Paper 10359, (2020 May.). doi: Y. Pene, Y. Horyn, and C. Combet, "Non-linear acoustic losses prediction in vented loudspeaker using computational fluid dynamic simulation," Paper 10359, (2020 May.). doi:
Abstract: Bass-reflex designs can exhibit strong non-linear behaviour around their resonant frequency with significant acoustic losses and parasite noise emission. These phenomena are mainly due to turbulences and flow separation at the port’s inlet and outlet. This work proposes a method to predict the resulting non-linear acoustic losses for a given loudspeaker, enclosure volume and port geometry. The approach consists of coupling computational fluid dynamics (CFD) simulation with loudspeaker non-linear motion modelization. Four different ports geometries mounted on one given loudspeaker enclosure are tested. The computed acoustic losses are compared with measurements and show a good agreement. The obtained results prove that the proposed method can predict non-linear losses with an average error less than 1 dB around the Helmholtz frequency.

@article{pene2020non-linear,
author={pene, yves and horyn, yoachim and combet, christophe},
journal={journal of the audio engineering society},
title={non-linear acoustic losses prediction in vented loudspeaker using computational fluid dynamic simulation},
year={2020},
volume={},
number={},
pages={},
doi={},
month={may},} @article{pene2020non-linear,
author={pene, yves and horyn, yoachim and combet, christophe},
journal={journal of the audio engineering society},
title={non-linear acoustic losses prediction in vented loudspeaker using computational fluid dynamic simulation},
year={2020},
volume={},
number={},
pages={},
doi={},
month={may},
abstract={bass-reflex designs can exhibit strong non-linear behaviour around their resonant frequency with significant acoustic losses and parasite noise emission. these phenomena are mainly due to turbulences and flow separation at the port’s inlet and outlet. this work proposes a method to predict the resulting non-linear acoustic losses for a given loudspeaker, enclosure volume and port geometry. the approach consists of coupling computational fluid dynamics (cfd) simulation with loudspeaker non-linear motion modelization. four different ports geometries mounted on one given loudspeaker enclosure are tested. the computed acoustic losses are compared with measurements and show a good agreement. the obtained results prove that the proposed method can predict non-linear losses with an average error less than 1 db around the helmholtz frequency.},}

TY - paper
TI - Non-linear acoustic losses prediction in vented loudspeaker using computational fluid dynamic simulation
SP - EP -
AU - Pene, Yves
AU - Horyn, Yoachim
AU - Combet, Christophe
PY - 2020
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - May 2020 TY - paper
TI - Non-linear acoustic losses prediction in vented loudspeaker using computational fluid dynamic simulation
SP - EP -
AU - Pene, Yves
AU - Horyn, Yoachim
AU - Combet, Christophe
PY - 2020
JO - Journal of the Audio Engineering Society
IS -
VO -
VL -
Y1 - May 2020
AB - Bass-reflex designs can exhibit strong non-linear behaviour around their resonant frequency with significant acoustic losses and parasite noise emission. These phenomena are mainly due to turbulences and flow separation at the port’s inlet and outlet. This work proposes a method to predict the resulting non-linear acoustic losses for a given loudspeaker, enclosure volume and port geometry. The approach consists of coupling computational fluid dynamics (CFD) simulation with loudspeaker non-linear motion modelization. Four different ports geometries mounted on one given loudspeaker enclosure are tested. The computed acoustic losses are compared with measurements and show a good agreement. The obtained results prove that the proposed method can predict non-linear losses with an average error less than 1 dB around the Helmholtz frequency.