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Numerical Simulation of Transport and Deposition of Dust Particles in Human Tracheobronchial Airways

Received: 3 April 2019     Accepted: 11 May 2019     Published: 4 June 2019
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Abstract

Dust is a common pollutant of the air we breath. If dust particles are inhaled and deposited in human airways, they can cause a variety of respiratory disorders. The inhaled dust particles motion in human airways goes along with the airflow. The transport process can be considered as a two-phase flow of a gas phase and a particle phase. In this study, we investigated the airflow and dust particles transport and deposition in human tracheobronchial airways using computational fluid dynamics (CFD) techniques. A steady simulation was performed in asymmetric tracheobronchial airway mode consisting of 19 outlets to observe the characteristics of airflow fields. The discrete phase model (DPM) was employed to predict the particle trajectories and deposition in the airway model. Deposition resulted from inertial impaction and gravitational sedimentation was considered. In the simulation, the airflow characteristics differences in the right and left bronchial trees were observed. The influence of secondary flow on dust particles motion was great. More dust particles were deposited in the right bronchial tree than in the left. The deposition fraction of dust particles in human tracheobronchial airways was high. This study can provide awareness on deposition of dust particles passing beyond the larynx and enhance prevention of their entry into the respiratory system. It can also contribute a convenient way on the location of deposition of particles of a given type in human respiratory tract to be used for respiratory disease preventions.

Published in International Journal of Biomedical Science and Engineering (Volume 7, Issue 1)
DOI 10.11648/j.ijbse.20190701.12
Page(s) 8-15
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2019. Published by Science Publishing Group

Keywords

Airflow, Dust Particles, Airway Model, CFD Simulation, Flow Characteristics, Deposition Fraction

References
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  • APA Style

    Endalew Getnet Tsega, Vinod Kumar Katiyar, Pratibha Gupta. (2019). Numerical Simulation of Transport and Deposition of Dust Particles in Human Tracheobronchial Airways. International Journal of Biomedical Science and Engineering, 7(1), 8-15. https://doi.org/10.11648/j.ijbse.20190701.12

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    ACS Style

    Endalew Getnet Tsega; Vinod Kumar Katiyar; Pratibha Gupta. Numerical Simulation of Transport and Deposition of Dust Particles in Human Tracheobronchial Airways. Int. J. Biomed. Sci. Eng. 2019, 7(1), 8-15. doi: 10.11648/j.ijbse.20190701.12

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    AMA Style

    Endalew Getnet Tsega, Vinod Kumar Katiyar, Pratibha Gupta. Numerical Simulation of Transport and Deposition of Dust Particles in Human Tracheobronchial Airways. Int J Biomed Sci Eng. 2019;7(1):8-15. doi: 10.11648/j.ijbse.20190701.12

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  • @article{10.11648/j.ijbse.20190701.12,
      author = {Endalew Getnet Tsega and Vinod Kumar Katiyar and Pratibha Gupta},
      title = {Numerical Simulation of Transport and Deposition of Dust Particles in Human Tracheobronchial Airways},
      journal = {International Journal of Biomedical Science and Engineering},
      volume = {7},
      number = {1},
      pages = {8-15},
      doi = {10.11648/j.ijbse.20190701.12},
      url = {https://doi.org/10.11648/j.ijbse.20190701.12},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijbse.20190701.12},
      abstract = {Dust is a common pollutant of the air we breath. If dust particles are inhaled and deposited in human airways, they can cause a variety of respiratory disorders. The inhaled dust particles motion in human airways goes along with the airflow. The transport process can be considered as a two-phase flow of a gas phase and a particle phase. In this study, we investigated the airflow and dust particles transport and deposition in human tracheobronchial airways using computational fluid dynamics (CFD) techniques. A steady simulation was performed in asymmetric tracheobronchial airway mode consisting of 19 outlets to observe the characteristics of airflow fields. The discrete phase model (DPM) was employed to predict the particle trajectories and deposition in the airway model. Deposition resulted from inertial impaction and gravitational sedimentation was considered. In the simulation, the airflow characteristics differences in the right and left bronchial trees were observed. The influence of secondary flow on dust particles motion was great. More dust particles were deposited in the right bronchial tree than in the left. The deposition fraction of dust particles in human tracheobronchial airways was high. This study can provide awareness on deposition of dust particles passing beyond the larynx and enhance prevention of their entry into the respiratory system. It can also contribute a convenient way on the location of deposition of particles of a given type in human respiratory tract to be used for respiratory disease preventions.},
     year = {2019}
    }
    

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  • TY  - JOUR
    T1  - Numerical Simulation of Transport and Deposition of Dust Particles in Human Tracheobronchial Airways
    AU  - Endalew Getnet Tsega
    AU  - Vinod Kumar Katiyar
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    Y1  - 2019/06/04
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    N1  - https://doi.org/10.11648/j.ijbse.20190701.12
    DO  - 10.11648/j.ijbse.20190701.12
    T2  - International Journal of Biomedical Science and Engineering
    JF  - International Journal of Biomedical Science and Engineering
    JO  - International Journal of Biomedical Science and Engineering
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    PB  - Science Publishing Group
    SN  - 2376-7235
    UR  - https://doi.org/10.11648/j.ijbse.20190701.12
    AB  - Dust is a common pollutant of the air we breath. If dust particles are inhaled and deposited in human airways, they can cause a variety of respiratory disorders. The inhaled dust particles motion in human airways goes along with the airflow. The transport process can be considered as a two-phase flow of a gas phase and a particle phase. In this study, we investigated the airflow and dust particles transport and deposition in human tracheobronchial airways using computational fluid dynamics (CFD) techniques. A steady simulation was performed in asymmetric tracheobronchial airway mode consisting of 19 outlets to observe the characteristics of airflow fields. The discrete phase model (DPM) was employed to predict the particle trajectories and deposition in the airway model. Deposition resulted from inertial impaction and gravitational sedimentation was considered. In the simulation, the airflow characteristics differences in the right and left bronchial trees were observed. The influence of secondary flow on dust particles motion was great. More dust particles were deposited in the right bronchial tree than in the left. The deposition fraction of dust particles in human tracheobronchial airways was high. This study can provide awareness on deposition of dust particles passing beyond the larynx and enhance prevention of their entry into the respiratory system. It can also contribute a convenient way on the location of deposition of particles of a given type in human respiratory tract to be used for respiratory disease preventions.
    VL  - 7
    IS  - 1
    ER  - 

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Author Information
  • Department of Mathematics, Indian Institute of Technology Roorkee, Roorkee, India

  • Department of Mathematics, Indian Institute of Technology Roorkee, Roorkee, India

  • Department of Mathematics, Indian Institute of Technology Roorkee, Roorkee, India

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