On the Use of Computational Fluid Dynamics in the Prediction and Control of Exposure to Airborne Contaminants – an Illustration Using Spray Painting

Details

• Personal Author:
  Flynn MR ; Sills ED
• Description:
  Computational fluid dynamics (CFD) is employed to simulate breathing-zone concentration for a simple representation of spray painting a flat plate in a cross-flow ventilated booth. The results demonstrate the capability of CFD to track correctly changes in breathing-zone concentration associated with work practices shown previously to be significant in determining exposure. Empirical data, and models verified through field studies, are used to examine the predictive capability of these simulations and to identify important issues in the conduct of such comparisons. A commercially available CFD package is used to solve a three-dimensional turbulent flow problem for the velocity field, and to subsequently generate particle trajectories for polydisperse aerosols. An in-house algorithm is developed to convert the trajectory data to breathing-zone concentrations, transfer efficiencies and aerosol size distributions. The mesh size, time step, duration of the simulation, and number of particles per size interval are all important variables in achieving convergent results. [Description provided by NIOSH]
• Subjects:
  Environmental Exposure Occupational Health Paint Safety Software Ventilation
• Keywords:
  Author Keywords: Computational Fluid Dynamics Computer Software Exposure Assessment Exposure Levels Exposure Modelling Fluid Mechanics Mathematical Models Models Motion Studies Painting Paint Spraying Spray Painting

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• ISSN:
  0003-4878
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Journal Article
• Place as Subject:
  North Carolina ; OSHA Region 4
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  191-202
• Volume:
  44
• Issue:
  3
• NIOSHTIC Number:
  nn:20024440
• Citation:
  Ann Occup Hyg 2000 May; 44(3):191-202
• Contact Point Address:
  Michael R. Flynn, Department of Environmental Sciences and Engineering, University of North Carolina, Chapel Hill, NC 27599-7400, USA
• Email:
  mike_flynn@unc.edu
• Federal Fiscal Year:
  2000
• Performing Organization:
  Department of Environmental Sciences and Engineering, University of North Carolina, Chapel Hill, North Carolina
• Peer Reviewed:
  True
• Start Date:
  19950930
• Source Full Name:
  Annals of Occupational Hygiene
• End Date:
  19990929
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:914beab60528b537dd0e7eaf72120ac73ea672907b471f03dbaef2cb9fe272273eaa959be79c96633a898c51b6c50036722befe1792eaa181d4f8c56f36b6553
• Download URL:
  https://stacks.cdc.gov/view/cdc/196244/cdc_196244_DS1.pdf
• File Type:
  [PDF - 660.96 KB ]