TY - GEN
T1 - PHYSICAL AND NUMERICAL FLOW-EXCITED VOCAL FOLD MODELS
AU - Thomson, S. L.
AU - Mongeau, L.
AU - Frankel, S. H.
N1 - Publisher Copyright:
© Firenze University Press 2003.
PY - 2003
Y1 - 2003
N2 - Self-oscillating physical and numerical models of the vocal folds were investigated. The physical model was cast into an idealized shape of the vocal folds, on a 1:1 length scale with the human vocal folds, using a flexible polyurethane rubber. The model in a hemilaryngeal configuration experienced flow-induced oscillations at a frequency of 90 Hz and onset pressure of 1.2 kPa. The numerical model was a two-dimensional finite element model of the vocal folds and vocal tract. The flow was calculated throughout the flow domain using the incompressible, two-dimensional Navier-Stokes equations. The aerodynamics and vocal fold dynamics were fully coupled. Regular, self-sustained oscillations were predicted at a frequency of approximately 275 Hz. The influence of supraglottal duct length on vocal fold motion is discussed. The capabilities and limitations of the models are discussed, and areas for further development are identified.
AB - Self-oscillating physical and numerical models of the vocal folds were investigated. The physical model was cast into an idealized shape of the vocal folds, on a 1:1 length scale with the human vocal folds, using a flexible polyurethane rubber. The model in a hemilaryngeal configuration experienced flow-induced oscillations at a frequency of 90 Hz and onset pressure of 1.2 kPa. The numerical model was a two-dimensional finite element model of the vocal folds and vocal tract. The flow was calculated throughout the flow domain using the incompressible, two-dimensional Navier-Stokes equations. The aerodynamics and vocal fold dynamics were fully coupled. Regular, self-sustained oscillations were predicted at a frequency of approximately 275 Hz. The influence of supraglottal duct length on vocal fold motion is discussed. The capabilities and limitations of the models are discussed, and areas for further development are identified.
KW - finite element analysis
KW - Physical model
KW - vocal fold models
UR - http://www.scopus.com/inward/record.url?scp=85133202569&partnerID=8YFLogxK
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AN - SCOPUS:85133202569
T3 - Models and Analysis of Vocal Emissions for Biomedical Applications, MAVEBA 2003
SP - 147
EP - 150
BT - Models and Analysis of Vocal Emissions for Biomedical Applications, MAVEBA 2003
T2 - 3rd International Workshop on Models and Analysis of Vocal Emissions for Biomedical Applications, MAVEBA 2003
Y2 - 10 December 2003 through 12 December 2003
ER -