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CFD model for a 3-D inhaling mannequin: verification and validation.

Authors
Anthony-TR; Flynn-MR
Source
Ann Occup Hyg 2006 Mar; 50(2):157-173
NIOSHTIC No.
20029196
Abstract
This work investigates the use of computational fluid dynamics (CFD) to model air flow and particle transport associated with an inhaling anatomical mannequin. The studied condition is typically representative of occupational velocities (Re = 1920) and at-rest breathing (R = Uo/Um = 0.11). Methods to verify and validate CFD simulations are detailed to demonstrate convergence and describe the model's uncertainties. The standard k-epsilon model provided a reasonable flow field, although vertical velocity components were consistently smaller than the experimental validation data, owing to truncation of the computational model at hip height. Laminar particle trajectory studies indicated that the modeled velocity field resulted in a shift of particle aspiration fractions toward particles smaller than those determined experimentally, consistent with the vertical velocity field differences.
Keywords
Particulates; Inhalation-studies; Airborne-particles; Air-contamination; Exposure-levels; Humans; Gravimetric-analysis; Aerosols; Aerosol-particles
Contact
Environmental and Community Health, Mel and Enid Zuckerman College of Public Health, The University of Arizona, Tucson, AZ 85721-0468, USA
CODEN
AOHYA3
Publication Date
20060301
Document Type
Journal Article
Email Address
tra@email.arizona.edu
Funding Amount
719405
Funding Type
Grant
Fiscal Year
2006
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-007363; Grant-Number-T01-CCT-910446
Issue of Publication
2
ISSN
0003-4878
Priority Area
Research Tools and Approaches: Exposure Assessment Methods
Source Name
Annals of Occupational Hygiene
State
NC; AZ
Performing Organization
University of North Carolina Chapel Hill
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