A fully coupled fluid–structure–acoustic interaction simulation on reed-type artificial vocal fold

Yoshinaga, Takao; Arai, Takayuki; Inaam, Rafia; Yokoyama, Hiroshi; Iida, Akiyoshi

doi:10.1016/j.apacoust.2021.108339

Cited by 4 publications

(1 citation statement)

References 20 publications

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“…To consider the turbulent flow around the vocal folds, the large eddy simulation was applied to filter the subgrid-scale turbulent energy using an implicit turbulence model with a 10th-order spatial filter. Details are described in Yoshinaga et al (2020) and Yoshinaga et al (2021).…”

Section: B 3d Flow Modelmentioning

confidence: 99%

Comparison of one-dimensional and three-dimensional glottal flow models in left-right asymmetric vocal fold conditions

Yoshinaga

Zhang²,

Iida

2022

The Journal of the Acoustical Society of America

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While the glottal flow is often simplified as one-dimensional (1D) in computational models of phonation to reduce computational costs, the 1D flow model has not been validated in left-right asymmetric vocal fold conditions, as often occur in both normal and pathological voice production. It is unclear to what extent the 1D model approximates the effect of three-dimensional (3D) flow phenomena and fluid-structure interaction. In this study, we performed 1D and 3D flow simulations coupled with the two-mass vocal fold model and compared vocal fold vibration patterns at different degrees of left-right stiffness asymmetry. The flow and acoustic fields in 3D were predicted by solving the compressible Navier-Stokes equations using the volume penalization method and considering the moving vocal fold wall as an immersed boundary. The results showed that vocal fold vibration amplitudes and left-right phase differences in the 3D flow were predicted by the 1D flow model under conditions of small left-right asymmetry, while vocal fold vibration amplitudes were underestimated at conditions of large left-right asymmetry. This indicates that 1D flow models may be sufficient in modeling phonation under left-right asymmetric conditions, although the performance can be further improved by more accurately predicting air pressure on vocal fold surface.

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Section: B 3d Flow Modelmentioning

confidence: 99%

Comparison of one-dimensional and three-dimensional glottal flow models in left-right asymmetric vocal fold conditions

Yoshinaga

Zhang²,

Iida

2022

The Journal of the Acoustical Society of America

View full text Add to dashboard Cite

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Fluid-Structure-Acoustic coupling analysis for external laminar and turbulent fluid flows

et al. 2023

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Comparison of one-dimensional and three-dimensional glottal flow models in left-right asymmetric vocal fold conditions

Yoshinaga

Zhang

Iida

2022

The Journal of the Acoustical Society of America

View full text Add to dashboard Cite

While the glottal flow is often simplified as one-dimensional (1D) in computational models of phonation to reduce computational costs, the 1D flow model has not been validated in left-right asymmetric vocal fold conditions, as often occur in both normal and pathological voice production. In this study, we performed three-dimensional (3D) and 1D flow simulations coupled to a two-mass model of adult male vocal folds and compared voice production at different degrees of left-right stiffness asymmetry. The flow and acoustic fields in 3D were obtained by solving the compressible Navier-Stokes equations using the volume penalization method with the moving vocal fold wall as an immersed boundary. Despite differences in the predicted flow pressure on vocal fold surface between the 1D and 3D flow models, the results showed reasonable agreement in vocal fold vibration patterns and selected voice outcome measures between the 1D and 3D models for the range of left-right asymmetric conditions investigated. This indicates that vocal fold properties play a larger role than the glottal flow in determining the overall pattern of vocal fold vibration and the produced voice, and the 1D flow simplification is sufficient in modeling phonation, at least for the simplified glottal geometry of this study.

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A fully coupled fluid–structure–acoustic interaction simulation on reed-type artificial vocal fold

Cited by 4 publications

References 20 publications

Comparison of one-dimensional and three-dimensional glottal flow models in left-right asymmetric vocal fold conditions

Comparison of one-dimensional and three-dimensional glottal flow models in left-right asymmetric vocal fold conditions

Fluid-Structure-Acoustic coupling analysis for external laminar and turbulent fluid flows

Comparison of one-dimensional and three-dimensional glottal flow models in left-right asymmetric vocal fold conditions

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