Computational simulations of vocal fold vibration: Bernoulli versus Navier-Stokes

Journal of Voice : Official Journal of the Voice Foundation
Gifford Z Decker, Scott L Thomson

Abstract

The use of the mechanical energy (ME) equation for fluid flow, an extension of the Bernoulli equation, to predict the aerodynamic loading on a two-dimensional finite element vocal fold model is examined. Three steady, one-dimensional ME flow models, incorporating different methods of flow separation point prediction, were compared. For two models, determination of the flow separation point was based on fixed ratios of the glottal area at separation to the minimum glottal area; for the third model, the separation point determination was based on fluid mechanics boundary layer theory. Results of flow rate, separation point, and intraglottal pressure distribution were compared with those of an unsteady, two-dimensional, finite element Navier-Stokes model. Cases were considered with a rigid glottal profile as well as with a vibrating vocal fold. For small glottal widths, the three ME flow models yielded good predictions of flow rate and intraglottal pressure distribution, but poor predictions of separation location. For larger orifice widths, the ME models were poor predictors of flow rate and intraglottal pressure, but they satisfactorily predicted separation location. For the vibrating vocal fold case, all models resulted in simi...Continue Reading

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Citations

Sep 14, 2013·Journal of Sound and Vibration·M S Howe, R S McGowan
Feb 12, 2009·The Journal of the Acoustical Society of America·Zhaoyan Zhang
May 9, 2012·The Journal of the Acoustical Society of America·Simeon L Smith, Scott L Thomson
Aug 16, 2014·Journal of Fluids and Structures·Pinaki Bhattacharya, Thomas Siegmund
Jan 12, 2010·The Journal of the Acoustical Society of America·Mihai MihaescuEphraim J Gutmark
Jan 21, 2014·The Journal of the Acoustical Society of America·Liran OrenEphraim Gutmark
Jun 18, 2010·Medical & Biological Engineering & Computing·Julien CisonniXavier Pelorson
Jan 1, 2007·Computers & Structures·Scott L ThomsonSteven H Frankel
Apr 25, 2014·International Journal for Numerical Methods in Biomedical Engineering·Pinaki Bhattacharya, Thomas Siegmund
Dec 6, 2011·Journal of Biomechanics·Douglas CookMargaret Julias
Aug 19, 2016·Tissue Engineering. Part C, Methods·Neda LatifiLuc Mongeau
Nov 26, 2015·Journal of Biomechanical Engineering·Siyuan ChangBernard Rousseau
Sep 7, 2013·Journal of Biomechanical Engineering·Siyuan ChangBernard Rousseau
Jun 16, 2019·Journal of Biomechanical Engineering·Zheng LiHaoxiang Luo
Dec 13, 2017·Biomechanics and Modeling in Mechanobiology·Pablo GómezMichael Döllinger
Mar 27, 2021·The Journal of the Acoustical Society of America·Zheng LiHaoxiang Luo
Mar 22, 2021·Journal of Voice : Official Journal of the Voice Foundation·Jan G ŠvecIngo R Titze
Sep 3, 2021·The Journal of the Acoustical Society of America·Mohsen Motie-ShiraziByron D Erath

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