Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/31708
Title: Particle deposition in a CT-scanned human lung airway
Authors: Luo, HY
Liu, Y 
Issue Date: 2009
Source: Journal of biomechanics, 2009, v. 42, no. 12, p. 1869-1876
Abstract: The particle deposition in a computerized tomography (CT)-scanned human lung was numerically investigated. The five-generation airway is extracted from the trachea to segmental bronchi of a 60-year-old Chinese male patient. Computations were carried out in the flow rate range of 210-630 ml/s (Reynolds number range of 1000-3000) and particle size of 2-10 μm (Stokes number range of 0.0007-0.049). To count the effect of laryngeal jet on trachea inlet, the trachea was extended and modified to simulate the larynx, consequently the inlet velocity profile is biased towards the rear wall. The laryngeal jet-induced turbulence was simulated using low Reynolds number (LRN) κ-ω turbulent model. Particle deposition patterns, deposition efficiency and deposition factor were studied in detail. The turbulent flow has significant effect on the particle deposition, and the present deposition factor is compared well with the available data.
Keywords: Human lung model
Numerical simulation
Particle deposition
Turbulent flow
Publisher: Elsevier
Journal: Journal of biomechanics 
ISSN: 0021-9290
DOI: 10.1016/j.jbiomech.2009.05.004
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