The effect of entrance radii on intraglottal pressure distributions in the divergent glottis.

The Journal of the Acoustical Society of America
Sheng LiSupin Wang

Abstract

Modeling laryngeal aerodynamics requires specification of the glottal geometry. Changing the glottal exit radius alters the intraglottal pressure distributions in the converging glottis [Scherer et al., J. Acoust. Soc. Am. 110, 2267-2269 (2001)]. This study examined the effects of the glottal entrance radius on the intraglottal pressure distributions for divergent angles of 5°, 10°, 20°, 30°, and 40°. Glottal airflow and minimal glottal diameter were held constant at 73.2 cm(3)/s and 0.02 cm, respectively. The computational code FLUENT was used to obtain the pressure distributions. Results suggest that a smaller glottal entrance radius tends to (1) lower the transglottal pressure (reduce glottal flow resistance), although this is angle dependent, (2) make the pressure dip near the glottal entrance more negative in value, (3) increase the slope of the pressure distribution just upstream of the glottal entrance, and (4) make the initial pressure recovery (rise) in the glottis steeper. A general empirical equation for transglottal pressure as a function of radius, angle, and separation point location is offered. These results suggest that glottal entrance curvature for the divergent glottis significantly affects the driving pressu...Continue Reading

References

Aug 1, 1997·The Journal of the Acoustical Society of America·L MongeauR A Kubli
Dec 29, 2000·Journal of Voice : Official Journal of the Voice Foundation·F Alipour, R C Scherer
Apr 28, 2001·The Journal of the Acoustical Society of America·R C SchererA A Afjeh
Jan 5, 2002·The Journal of the Acoustical Society of America·R C SchererB R Kucinschi
Feb 1, 2003·The Journal of the Acoustical Society of America·Daoud ShinwariAbdollah A Afjeh
Oct 14, 2004·The Journal of the Acoustical Society of America·Fariborz Alipour, Ronald C Scherer
Feb 4, 2006·The Journal of the Acoustical Society of America·Sheng LiHuiHui Wu
May 20, 2006·The Journal of the Acoustical Society of America·Sheng LiHuihui Wu
Aug 17, 2010·The Journal of the Acoustical Society of America·Ronald C SchererAbdollah A Afjeh

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Citations

Dec 3, 2013·Computers in Biology and Medicine·A Hundertmark-ZauškováF Müller
Feb 4, 2006·The Journal of the Acoustical Society of America·Sheng LiHuiHui Wu
May 20, 2006·The Journal of the Acoustical Society of America·Sheng LiHuihui Wu
Aug 16, 2014·Journal of Fluids and Structures·Pinaki Bhattacharya, Thomas Siegmund
Dec 7, 2014·The Journal of the Acoustical Society of America·Ingo R TitzeSimeon L Smith
Oct 31, 2016·The Journal of the Acoustical Society of America·Zhaoyan Zhang
Mar 27, 2021·The Journal of the Acoustical Society of America·Zheng LiHaoxiang Luo
Sep 3, 2021·The Journal of the Acoustical Society of America·Mohsen Motie-ShiraziByron D Erath

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