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Modelling the human pharyngeal airway: validation of numerical simulations using in vitro experiments
Authors:Chouly Franz  Van Hirtum Annemie  Lagrée Pierre-Yves  Pelorson Xavier  Payan Yohan
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
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.
Contact Information Yohan PayanEmail:
Keywords:Numerical simulation and modelling  In vitro measurements  Fluid–  structure interaction  Obstructive sleep apnea syndrome
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