City Research Online

Abstract

Flow is studied through a channel with an oscillating orifice mimicking the motion of the glottal-gap during phonation. Simulations with prescribed flow and wall-motion are carried out for different orifice geometries, a 2D slit-like and a 3D lens-like one. Although the jet emerges from a symmetric orifice a significant deflection occurs in case of the slit-like geometry, contrary to the 3D lens-like one. The results demonstrate the dependency of jet entrainment and vortex dynamics on the orifice geometry and the interpretation of asymmetric jet deflection with regard to the relevance of the Coanda effect in the process of human phonation.

Publication Type:	Article
Additional Information:	Copyright (2011) Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America. The following article appeared in Mattheus, W. & Brücker, C. (2011). Asymmetric glottal jet deflection: differences of two- and three-dimensional models. The Journal of the Acoustical Society of America (JASA), 130(6), EL373 -EL379. doi: 10.1121/1.3655893 and may be found at http://scitation.aip.org/content/asa/journal/jasa/130/6/10.1121/1.3655893.
Subjects:	T Technology > TA Engineering (General). Civil engineering (General)
Departments:	School of Science & Technology
SWORD Depositor:	Symplectic Administrator

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