Journal article
Computational fluid dynamics investigation of particle inhalability
Journal of aerosol science, Vol.37(6), pp.750-765
2006
DOI: 10.1016/j.jaerosci.2005.06.009
Abstract
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
⩾
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.
Details
- Title: Subtitle
- Computational fluid dynamics investigation of particle inhalability
- Creators
- T. Renée AnthonyMichael R Flynn
- Resource Type
- Journal article
- Publication Details
- Journal of aerosol science, Vol.37(6), pp.750-765
- Publisher
- Elsevier Ltd
- DOI
- 10.1016/j.jaerosci.2005.06.009
- ISSN
- 0021-8502
- eISSN
- 1879-1964
- Language
- English
- Date published
- 2006
- Academic Unit
- Occupational and Environmental Health
- Record Identifier
- 9983997331002771
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