Numerical study of a nasal cavity model having a constricted pharyngeal section representing obstructive sleep apnea

Mohammad Zuber, Vizy N. Riazuddin, Kamarul A. Ahmad, Shah M.A. Khader

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This study presents, use of a technique based on functional imaging and Computational Fluid Dynamics (CFD) modeling in generating useful data that can be used to determine and diagnose Obstructive Sleep Apnea (OSA) condition. A three-dimensional nasal cavity model was reconstructed based on computed tomographic images of a healthy Malaysian adult nose. Navier-Stokes and continuity equations for steady airflow were solved numerically to examine inspiratory and expiratory nasal flow.The study showed that, the pressure drop from the choanae to the OSA region was found to be larger than the pressure drop through the nasal passages. Stresses as high as 42.4 Pa were observed in this constricted OSA passageway, which is otherwise not a common occurrence in the normal subjects.

Original languageEnglish
Pages (from-to)219-226
Number of pages8
JournalJournal of Computational Methods in Sciences and Engineering
Volume17
Issue number2
DOIs
Publication statusPublished - 2017

Fingerprint

Sleep
Numerical Study
Cavity
Pressure Drop
Pressure drop
Continuity Equation
Dynamic Modeling
Computational Fluid Dynamics
Navier-Stokes Equations
Computational fluid dynamics
Imaging
Model
Imaging techniques
Three-dimensional

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Computer Science Applications
  • Computational Mathematics

Cite this

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abstract = "This study presents, use of a technique based on functional imaging and Computational Fluid Dynamics (CFD) modeling in generating useful data that can be used to determine and diagnose Obstructive Sleep Apnea (OSA) condition. A three-dimensional nasal cavity model was reconstructed based on computed tomographic images of a healthy Malaysian adult nose. Navier-Stokes and continuity equations for steady airflow were solved numerically to examine inspiratory and expiratory nasal flow.The study showed that, the pressure drop from the choanae to the OSA region was found to be larger than the pressure drop through the nasal passages. Stresses as high as 42.4 Pa were observed in this constricted OSA passageway, which is otherwise not a common occurrence in the normal subjects.",
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Numerical study of a nasal cavity model having a constricted pharyngeal section representing obstructive sleep apnea. / Zuber, Mohammad; Riazuddin, Vizy N.; Ahmad, Kamarul A.; Khader, Shah M.A.

In: Journal of Computational Methods in Sciences and Engineering, Vol. 17, No. 2, 2017, p. 219-226.

Research output: Contribution to journalArticle

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