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Numerical simulation of glottal flow in surgically changed larynx
Author(s) -
HundertmarkZaušková Anna,
Lehmann Ragnar,
Hess Markus,
Müller Frank
Publication year - 2016
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201610410
Subject(s) - larynx , airflow , expiration , breathing , vocal folds , finite element method , flow (mathematics) , compressibility , set (abstract data type) , acoustics , mechanics , mathematics , computer science , physics , medicine , anatomy , thermodynamics , respiratory system , programming language
According to clinical experience the shape of the larynx seems to have a significant impact on the airflow degree and breathing pattern. In this study we perform a set of numerical experiments simulating the glottal flow in surgically changed larynx, where the vocal folds or false vocal are modified. We are aiming to find an optimal geometry of the larynx in terms of easiness for breathing. To this goal we numerically solve the system for weakly compressible Navier–Stokes equations using the finite element method and we compare the airflow resistance and the volumetric flow rate for the set of geometries for inspiration as well as expiration. We discuss the optimal geometry with respect to the quality of breathing. (© 2016 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)