Numerical simulation of human exposure to aerosols generated during compressed air spray-painting in cross-flow ventilated booths.
J Fluids Eng 2001 Mar; 123(1):64-70
This paper examines the use of computational fluid dynamics as a tool for predicting human exposure to aerosols generated during compressed air spray painting in cross-flow ventilated booths. Wind tunnel experiments employing a mannequin and non-volatile oil provide data to evaluate the numerical predictions. Fidap (v8.01) is used to calculate the velocity field and particle trajectories, while in-house codes were developed to post-process the trajectory data into mass concentrations, size distributions, transfer efficiency, and over-spray generation rates. The predicted dimensionless breathing-zone concentration of 0.13+/-23 percent is in agreement with the measured value of 0.13+/-15 percent given the uncertainties involved in such comparisons. Computational fluid dynamics is a powerful tool capable of providing useful information to occupational hygiene engineers involved in controlling human exposures to toxic airborne contaminants.
Industrial-hygiene; Occupational-exposure; Spray-painting; Fluid-mechanics; Aerosols; Aerosol-sampling; Ventilation; Mathematical-models; Paint-spraying
Research Tools and Approaches: Exposure Assessment Methods
Journal of Fluids Engineering
Department of Environmental Sciences and Engineering, University of North Carolina, Chapel Hill, North Carolina