Transport and deposition of particles in human upper thoracic airways is important to understand their toxicology and the effect of exposure to environmental particulate matter as well as in the design of inhalation drug delivery devices. In the past, limited studies have employed 3-D asymmetric models to study the airflow through human lung, although tracheobronchial branching is generally asymmetric. Also limited work has been devoted to the study of particle deposition in upper airways where turbulence is important to particle depositions. It is also known that the asymmetry of the airways has a profound effect on the airflow fields and particle transport and deposition. The present study is concerned with providing a more accurate computational model for lung deposition. A realistic 3-D asymmetric bifurcation representation of human upper tracheobronchial tree has been developed to simulate the airflow field characterizing the inspiratory flow conditions using a turbulence Reynolds stress transport model. A Lagrangian particle trajectory analysis was also used for analyzing particle transport and deposition patterns in the upper tracheobronchial tree.
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ASME 2006 2nd Joint U.S.-European Fluids Engineering Summer Meeting Collocated With the 14th International Conference on Nuclear Engineering
July 17–20, 2006
Miami, Florida, USA
Conference Sponsors:
- Fluids Engineering Division
ISBN:
0-7918-4751-9
PROCEEDINGS PAPER
Flow and Particle Deposition in Asymmetric Human Airways Available to Purchase
Y.-S. Cheng
Y.-S. Cheng
Lovelace Respiratory Research Institute, Albuquerque, NM
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L. Tian
Clarkson University, Potsdam, NY
G. Ahmadi
Clarkson University, Potsdam, NY
P. K. Hopke
Clarkson University, Potsdam, NY
Y.-S. Cheng
Lovelace Respiratory Research Institute, Albuquerque, NM
Paper No:
FEDSM2006-98198, pp. 613-619; 7 pages
Published Online:
September 5, 2008
Citation
Tian, L, Ahmadi, G, Hopke, PK, & Cheng, Y. "Flow and Particle Deposition in Asymmetric Human Airways." Proceedings of the ASME 2006 2nd Joint U.S.-European Fluids Engineering Summer Meeting Collocated With the 14th International Conference on Nuclear Engineering. Volume 2: Fora. Miami, Florida, USA. July 17–20, 2006. pp. 613-619. ASME. https://doi.org/10.1115/FEDSM2006-98198
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