Modelling the human pharyngeal airway: validation of numerical simulations using in vitro experiments |
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Authors: | Chouly Franz Van Hirtum Annemie Lagrée Pierre-Yves Pelorson Xavier Payan Yohan |
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Institution: | (1) INRIA, REO Team, Rocquencourt, BP 105, 78153 Le Chesnay Cedex, France;(2) Laboratoire TIMC, UMR CNRS 5525, Université Joseph Fourier, 38706 La Tronche, France;(3) Département Parole et Cognition, GIPSA-Lab, INPG/UMR CNRS 5216, 46 Av. Felix Viallet, 38031 Grenoble, France;(4) Institut Jean le Rond d’Alembert, UMR CNRS 7190, 4, Place Jussieu, 75252 Paris Cedex 05, France |
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Abstract: | In the presented study, a numerical model which predicts the flow-induced collapse within the pharyngeal airway is validated
using in vitro measurements. Theoretical simplifications were considered to limit the computation time. Systematic comparisons
between simulations and measurements were performed on an in vitro replica, which reflects asymmetries of the geometry and
of the tissue properties at the base of the tongue and in pathological conditions (strong initial obstruction). First, partial
obstruction is observed and predicted. Moreover, the prediction accuracy of the numerical model is of 4.2% concerning the
deformation (mean quadratic error on the constriction area). It shows the ability of the assumptions and method to predict
accurately and quickly a fluid–structure interaction.
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Keywords: | Numerical simulation and modelling In vitro measurements Fluid– structure interaction Obstructive sleep apnea syndrome |
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