NDLI: A Study of Vocal Fold Vibration Using a Slightly Compressible Fluid Domain

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Daily, D. J. Thomson, S. L.
Copyright Year	2009
Abstract	During human voice production, air forced from the lungs through the larynx induces vibration of the vocal folds. Computational models of this coupled fluid-solid system have traditionally utilized an incompressible fluid domain. However, studies have shown that coupling of tracheal acoustics with vocal fold dynamics is significant. Further, in the absence of compressibility, some models fail to achieve self-sustained vibration. This presentation discusses a slightly compressible airflow model, fully coupled with a vocal fold tissue model, as a possible substitute for the traditional incompressible approach. The derivation and justification of the slightly compressible fluid model are discussed. Results are reported of a study of the nature of the coupling between the fluid and vocal fold regions for both slightly compressible and incompressible fluid domains using a commercial fluid-solid finite element package. Three different types of inlet boundary conditions, including constant pressure, constant velocity, and moving wall, are explored. The incompressible and slightly compressible models with the three boundary conditions are compared with each other and with experimental data obtained using synthetic self-oscillating vocal fold models. The results are used to validate the slightly compressible flow model as well as to explore candidate boundary conditions for vocal fold vibration simulations.
Starting Page	457
Ending Page	462
Page Count	6
File Format	PDF
ISBN	9780791843758
DOI	10.1115/IMECE2009-10628
e-ISBN	9780791838631
Volume Number	Volume 2: Biomedical and Biotechnology Engineering
Conference Proceedings	ASME 2009 International Mechanical Engineering Congress and Exposition
Language	English
Publisher Date	2009-11-13
Publisher Place	Lake Buena Vista, Florida, USA
Access Restriction	Subscribed
Subject Keyword	Vibration Compressibility Biological tissues Lung Acoustics Pressure Fluids Vocal cords Air flow Simulation Dynamics (mechanics) Boundary-value problems Engineering simulation Finite element analysis Trachea Compressible flow Incompressible fluids
Content Type	Text
Resource Type	Article

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