Simulation of pharyngeal airway interaction with air flow using low-re turbulence model

J. Y. Tu, Mohammad Rasidi Mohammad Rasani, K. Inthavong

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

This paper aims to simulate the interaction between a simplified tongue replica with expiratory air flow considering the flow in the pharyngeal airway to be turbulent. A three-dimensional model with a low-Re SST turbulence model is adopted. An Arbitrary Eulerian-Lagrangian description for the fluid governing equation is coupled with the Lagrangian structural solver via a partitioned approach, allowing deformation of the fluid domain to be captured. Both the three-dimensional flow features and collapsibility of the tongue are presented. In addition, examining initial constriction height ranging from 0.8mm to 11.0mm and tongue replica modulus from 1.25MPa to 2.25MPa, the influence of both of these parameters on the flow rate and collapsibility of the tongue is also investigated and discussed. Numerical simulations confirm expected predisposition of apneic patients with narrower airway opening to flow obstruction and suggest much severe tongue collapsibility if the pharyngeal flow regime is turbulent compared to laminar.

Original languageEnglish
Article number510472
JournalModelling and Simulation in Engineering
Volume2011
DOIs
Publication statusPublished - 2011
Externally publishedYes

Fingerprint

Collapsibility
Turbulence Model
Turbulence models
Fluids
Air
Replica
Interaction
Simulation
Flow rate
Fluid
Sea Surface Temperature
Three-dimensional Flow
Computer simulation
Obstruction
Flow Rate
Governing equation
Modulus
Numerical Simulation
Three-dimensional
Arbitrary

ASJC Scopus subject areas

  • Computer Science Applications
  • Modelling and Simulation
  • Engineering(all)

Cite this

Simulation of pharyngeal airway interaction with air flow using low-re turbulence model. / Tu, J. Y.; Mohammad Rasani, Mohammad Rasidi; Inthavong, K.

In: Modelling and Simulation in Engineering, Vol. 2011, 510472, 2011.

Research output: Contribution to journalArticle

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