Omid Bafkar

I am Omid, a Ph.D. candidate at RMIT University. Before I started my undergraduate degree, I worked in industry as a product & industrial designer. While I was completing my Bachelors in Mechanical Engineering, I worked in this field for a biomedical and dental equipment company.

My industrial experience and personal motivations towards engineering design led me to work for Tehran University of Medical Sciences as a mechanical design engineer in an exciting project and teamwork environment that eventually directed me to the wonderful research community. 

In 2013 I started my Master’s degree at RMIT University in Mechanical and Manufacturing Engineering. In 2017, I was introduced to obstructive sleep apnea and its consequences for  humanity. I was very excited to contribute to this area of science so, I started my PhD at RMIT on numerical modeling of the human respiratory system. We implement numerical modeling methods and techniques to understand the 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. 

Image of Omid Bafkar

Skills

  • Numerical modelling
    • CFD (computational fluid dynamics)
    • FSI (fluid structural interaction)
  • Programming 
    • MATLAB
    • Python
    • Arduino
  • CAD/CAE (computer aided design/engineering)
    • AutoCAD
    • ANSA
    • SolidWorks
    • ANSYS
  • 3D Slicer (volume rendering of medical images, used for research in image- guided therapy
  • HPC (high-performance computing)
    • ALYA
    • OpenFOAM    

PhD Project

Topic: Study of Airflow Phenomena and their effect on the respiratory system    

Obstructive sleep apnea (OSA) is a common disease and is considered a serious problem. Lack of proper treatment causes severe damage to oral health. Heart attack, diabetes, blood pressure and daytime sleepiness are common symptoms. OSA is defined by an apnea-hypopnea index (AHI), which indicates its level of severity. Rapid eye movement sleep (REMS) and polysomnography devices are the most common techniques implemented to define the level of obstruction of the upper airway. Treatment suggestions are based on the AHI measurement. However, uncertainty in the measurements can lead to the wrong treatment recommendation. Computational fluid dynamics (CFD) is now implemented as a novel solution to predict the level of obstruction in the upper airway with a high level of accuracy. This project considers applying a combination of the CFD and FEA (finite element analysis) to obtain  information that can predict the exact level of obstruction in the human upper airway, which can then assist clinicians to suggest superior treatment solutions.    

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.

Prior Work

  • PhD Researcher RMIT University & Commonwealth and Scientific and Industrial Research Organisation (CSIRO) (2017 - Present, Melbourne, Australia)
  • PhD Internship Barcelona Supercomputing Center (BSC) (04.2018 - 05.2018, Barcelona, Spain)
  • Research Assistant Tehran University of Medical Sciences (TUMS) (01.2011 - 01.2013, Tehran, Iran)
  • Industrial/Product Designer Dentus Dental & Medical Equipment Company (06.2008 - 12.2013, Tehran Iran)
  • Quality Control Manager Damavand Pars Air Conditioning Co. (01.2007 – 01.2008, Tehran, Iran)
  • Product Designer Damavand Pars Air Conditioning Co. (12. 2005 – 12.2006, Tehran, Iran)    

Further Information

  • Senior Supervisor: Prof Ivan Cole (RMIT University)
  • Associate Supervisor: Prof Gary Rosengarten (RMIT University)
  • Associate Supervisor: Dr. Daniel Lester (RMIT)
  • Associate Supervisor: Dr. Vu Nguyen (CSIRO)
  • Associate Supervisor: Mr. Stefan Gulizia (CSIRO)    

Awards

  • Best student presentation award, RMIT Sleep and Brain Health Symposium [2018, RMIT University, Melbourne, Australia]
  • RMIT Redback Innovation Challenge, idea generation for SleepMaker company [2018, RMIT University, Melbourne, Australia]
  • Erasmus Scholarship, [2018, Barcelona, Spain]
  • ARC Australian Research Council Scholarship [2017-2020]
  • Nominated for the academy award for best production & innovation design for the globe fixation system for animal eye practice from Tehran University of Medical Sciences [2012]

Publications

  1. Bafkar. O, Rosengarten. G, Patel. M, Lester. D, Nguyen. V, Gulizia. S, Cole. I. S (2020). “Prediction the effectiveness of mandibular advancement splints on AHI reduction via CFD, FSI and Neural networks”. (UNDER REVIEW)
  2. Bafkar. O, Rosengarten. G, Patel. M, Calmet. H, Lester. D, Nguyen. V, Gulizia. S, Cole. I. S. (2020). “Effect of inhalation on oropharynx collapse via flow visualisation.” (UNDER REVIEW)
  3. Bafkar. O, Cajas. J. C, Calmet. H, Houzeaux. G, Rosengarten. G, Lester. D, Nguyen. V, Gulizia. S, Cole. I. S. (2020). “Impact of sleeping position, gravitational force & tissue stiffness on obstructive sleep apnoea.” Journal of Biomechanics. doi.org/10.1016/j.jbiomech.2020.109715
  4. Bafkar. O, “Impact of tissue properties and gravitational force upon respiration in the tongue base and soft palate via FSI technique,” Sleep And Brain Symposium, Melbourne, Australia, Oct 23rd 2018.
  5. Bafkar. O and Sameh. R, “Optimization of Passive Bearing for High-Speed Spindle,” M.S. thesis, School of Engineering, Royal Melbourne Institute of Technology, Melbourne, Australia. 8th July 2016.[Online]. Available: https://doi.org/10.13140/rg.2.2.25143.62887
  6. Bafkar. O and Rajaai. S. M., “Design of a fixation system for animal eye practice,” 10th  International Symposium on Biomechanics and Biomedical Engineering, Berlin, Germany, April 11th-14th 2012. Available: http://www.cmbbe2012.cf.ac.uk/
  7. S. F. Mohammadi, A. Mazouri, N. Rahman-A, M. Jabbarvand, and G. A. Peyman, “Globe fixation system for animal eye practice,” Journal of Cataract and Refractive Surgery, vol. 37, no. 1, pp. July 2011.[Online]. (Bafkar.O, industrial design and fabrication)
    Available: https://doi.org/10.1016/j.jcrs.2010.10.026

References

  • [1]       O. Bafkar and S. M. Rajaai, “Design of a fixation system for animal eye practice,” 10th  International Symposium on Biomechanics and Biomedical Engineering, Berlin, Germany, April 11th-14th 2012. Available: http://www.cmbbe2012.cf.ac.uk/
  • [2]       O. Bafkar and R. Sameh, “Optimization of Passive Bearing for High-Speed Spindle,” M.S. thesis, School of Engineering, Royal Melbourne Institute of Technology, Melbourne, Australia. 8th July 2016.[Online]. Available: https://doi.org/10.13140/rg.2.2.25143.62887
  • [3]      S. F. Mohammadi, A. Mazouri, N. Rahman-A, M. Jabbarvand, and G. A. Peyman, “Globe fixation system for animal eye practice,” Journal of Cataract and Refractive Surgery, vol. 37, no. 1, pp. July 2011.[Online]. Available: https://doi.org/10.1016/j.jcrs.2010.10.026
  • [4]       O. Bafkar et al., “Impact of tissue properties and gravitational force upon respiration in the tongue base and soft palate via FSI technique,” Sleep And Brain Symposium, Melbourne, Australia, Oct 23rd 2018.

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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. - Artwork created by Louisa Bloomer