PhD abstract: Study of Airflow Phenomena in the Human Respiratory System

PhD abstract: Study of Airflow Phenomena in the Human Respiratory System

Omid Bafkar - ALUMNUS

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Obstructive Sleep Apnoea (OSA) is a common disorder, and continuous positive airway pressure (CPAP) is usually the therapy of choice. CPAP is known to have problems with adherence with many patients eventually abandoning the device. However, the development of an optimal OSA treatment for a specific patient requires a thorough understanding of the responses of the patient to the tailored OSA treatments which in turn need numerously costly clinical trials and measurements.

Therefore, accurate predictions of the responses of the patient to the tailored OSA treatments are highly desired. We implement numerical modelling methods and techniques to understand airflow behaviour in various sleeping positions and conditions.

This aims to provide a technique that can help specialists provide better treatment solutions to their patients. 

Ethical approval was obtained for all human trials.

National Computational Infrastructure (NCI) facilities were used for some of this research.

Figure 1. Airflow behaviour on the nasal cavities during the short inhalation Figure 1. Airflow behaviour on the nasal cavities during the short inhalation
Figure 1: A CFD model of the human respiratory system during inhalation.Blue lines indicate the flow streamline and the white cones are indication of the flow direction along the upper airway.

Figure 1:

A CFD model of the human respiratory system during inhalation.Blue lines indicate the flow streamline and the white cones are indication of the flow direction along the upper airway.

Figure 2: The globe fixation system, designed and manufactured for animal eye practice [4]. This device designed to use with animal eyes for surgical skills training.

Figure 2:

The globe fixation system, designed and manufactured for animal eye practice [4]. This device designed to use with animal eyes for surgical skills training.

Figure 3: A preclinic workbench from design phase to manufacturing. This work was completed at Dentus Dental & Medical Equipment.

Figure 3:

A preclinic workbench from design phase to manufacturing. This work was completed at Dentus Dental & Medical Equipment.

This project was conducted in conjunction with Oventus Manufacturing Pty Ltd and CSIRO.

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Computational fluid dynamics (CFD), fluid-structure interaction (FSI), 3D printing (stereolithography, PolyJet), selective laser melting, modelling process, direct laser metal deposition, fused deposition modelling, object printing

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RMIT University acknowledges the people of the Woi wurrung and Boon wurrung language groups of the eastern Kulin Nation on whose unceded lands we conduct the business of the University. RMIT University respectfully acknowledges their Ancestors and Elders, past and present. RMIT also acknowledges the Traditional Custodians and their Ancestors of the lands and waters across Australia where we conduct our business - Artwork 'Luwaytini' by Mark Cleaver, Palawa.

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aboriginal flag
torres strait flag

Acknowledgement of Country

RMIT University acknowledges the people of the Woi wurrung and Boon wurrung language groups of the eastern Kulin Nation on whose unceded lands we conduct the business of the University. RMIT University respectfully acknowledges their Ancestors and Elders, past and present. RMIT also acknowledges the Traditional Custodians and their Ancestors of the lands and waters across Australia where we conduct our business.

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