Faizal, Wan Mohd Faizal and Khor, Chu Yee and Che Yaakob, Muhammad Nooramin and Nik Ghazali, Nik Nazri and Zainon, Mohd Zamri and Ibrahim, Norliza and Mohd Razi, Roziana (2023) Turbulent kinetic energy of flow during inhale and exhale to characterize the severity of obstructive sleep apnea patient. CMES-Computer Modeling in Engineering & Sciences, 136 (1). pp. 43-61. ISSN 1526-1492, DOI https://doi.org/10.32604/cmes.2023.022716.
Full text not available from this repository.Abstract
This paper aims to investigate and present the numerical investigation of airflow characteristics using Turbulent Kinetic Energy (TKE) to characterize the upper airway with obstructive sleep apnea (OSA) under inhale and exhale breathing conditions. The importance of TKE under both breathing conditions is that it show an accurate method in expressing the severity of flow in sleep disorder. Computational fluid dynamics simulate the upper airway's airflow via steady-state Reynolds-averaged Navier-Stokes (RANS) with k-omega shear stress transport (SST) turbulence model. The three-dimensional (3D) airway model is created based on the CT scan images of an actual patient, meshed with 1.29 million elements using Materialise Interactive Medical Image Control System (MIMICS) and ANSYS software, respectively. High TKE were noticed around the region after the necking (smaller cross-sectional area) during the inhale and exhale breathing. The turbulent kinetic energy could be used as a valuable measure to identify the severity of OSA. This study is expected to provide a better understanding and clear visualization of the airflow characteristics during the inhale and exhale breathing in the upper airway of patients for medical practitioners in the OSA research field.
| Item Type: | Article |
|---|---|
| Funders: | Ministry of Higher Education, Malaysia, FRGS/1/2020/TK0/UNIMAP/03/26 |
| Uncontrolled Keywords: | Obstructive sleep apnea; Breathing disorders; Real patient; CFD; Turbulent kinetic energy |
| Subjects: | R Medicine > RC Internal medicine |
| Divisions: | Faculty of Dentistry Faculty of Engineering > Department of Mechanical Engineering |
| Depositing User: | Ms Zaharah Ramly |
| Date Deposited: | 01 Dec 2023 02:57 |
| Last Modified: | 01 Dec 2023 08:31 |
| URI: | http://eprints.um.edu.my/id/eprint/38998 |
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