Three-dimensional fluid-structure interaction modeling of expiratory flow in the pharyngeal airway

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

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

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

Original languageEnglish
Title of host publicationIFMBE Proceedings
Pages467-471
Number of pages5
Volume35 IFMBE
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event5th Kuala Lumpur International Conference on Biomedical Engineering, BIOMED 2011, Held in Conjunction with the 8th Asian Pacific Conference on Medical and Biological Engineering, APCMBE 2011 - Kuala Lumpur
Duration: 20 Jun 201123 Jun 2011

Other

Other5th Kuala Lumpur International Conference on Biomedical Engineering, BIOMED 2011, Held in Conjunction with the 8th Asian Pacific Conference on Medical and Biological Engineering, APCMBE 2011
CityKuala Lumpur
Period20/6/1123/6/11

Fingerprint

Fluid structure interaction
Fluids
Turbulence models
Laminar flow
Turbulent flow
Stiffness
Flow rate
Computer simulation
Air

Keywords

  • Apnea
  • Exhalation
  • Fluid-Structure Interaction

ASJC Scopus subject areas

  • Biomedical Engineering
  • Bioengineering

Cite this

Three-dimensional fluid-structure interaction modeling of expiratory flow in the pharyngeal airway. / Mohammad Rasani, Mohammad Rasidi; Inthavong, K.; Tu, J. Y.

IFMBE Proceedings. Vol. 35 IFMBE 2011. p. 467-471.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Mohammad Rasani, MR, Inthavong, K & Tu, JY 2011, Three-dimensional fluid-structure interaction modeling of expiratory flow in the pharyngeal airway. in IFMBE Proceedings. vol. 35 IFMBE, pp. 467-471, 5th Kuala Lumpur International Conference on Biomedical Engineering, BIOMED 2011, Held in Conjunction with the 8th Asian Pacific Conference on Medical and Biological Engineering, APCMBE 2011, Kuala Lumpur, 20/6/11. https://doi.org/10.1007/978-3-642-21729-6_118
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