Computational fluid dynamics investigation of particle inhalability

被引：0
|
作者：
Anthony, T. Renée [1 ]
Flynn, Michael R. [1 ]
机构：
[1] Department of Environmental Sciences and Engineering, School of Public Health, The University of North Carolina, Chapel Hill, NC 27599-7431, United States
来源：
Journal of Aerosol Science | 2006年 / 37卷 / 06期
关键词：
This study uses computational fluid dynamics to investigate particle aspiration at the low air velocities typical of occupational settings. A realistic representation of a human head on a simpler geometric torso was positioned facing the wind ( 0.2; 0.4 m s- 1 ); and breathing was simulated using constant inhalation ( 1.8; 4.3 m s- 1 ). Aspiration was simulated using laminar transport for particles 0.3- 116 μ m. Results from the 0.4 m s- 1 freestream and 4.3 m s- 1 inhalation rate compared well with results from the literature for smaller particles. For particles {greater than or slanted equal to} 68 μ m; simulations yielded smaller aspiration efficiencies than reported in experiments. For all low velocity conditions studied; the aspiration efficiency curve dropped well below the 50% recommended by the ACGIH in the forward-facing orientation. Additional investigation of aspiration efficiency at other orientations relative to the wind is recommended to fully investigate aspiration efficiency for large particles in occupational environments. © 2005 Elsevier Ltd. All rights reserved;
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摘要：
Journal article (JA)
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页码：750 / 765
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