The Effect of Reynolds Number on the Ventilation Efficiency in a Wind Tunnel

Details

• Personal Author:
  Celik IB ; Guffey SE ; Li J ; Yavuz I
• Description:
  The present work is concerned with the effect of the ventilation intensity on the worker exposure in a tunnel when the worker is facing the downstream direction and a gaseous contaminant is released in an arm length of his reach. A three-dimensional model of a manikin which was used in the experiments was created in order to study the effect of the mean inlet velocity which can be characterized by the Reynolds number based on the equivalent diameter of the head of the manikin. For this study, turbulent flow was assumed to enter the ventilation tunnel and exit at the other end from an exhaust duct. The scalar transport method was employed to determine the ethanol vapor concentration field. The results with the low_Re RNG turbulence model are compared to the ones with the RNG turbulence model. The results with the RNG k-e turbulence model seem to agree better with the experimental data at higher Reynolds numbers. At lower Reynolds numbers there are significant differences between experiments and predictions. [Description provided by NIOSH]
• Subjects:
  Aerosols Air Pollutants, Occupational Environmental Exposure Occupational Health Safety Solvents Ventilation
• Keywords:
  Aerosol Particles Air Contaminants Exposure Levels Models Simulation Methods Vapors
• ISBN:
  0791846911
• Publisher:
  American Society of Mechanical Engineers
• Document Type:
  Text
• Funding:
  Grant
• Genre:
  Proceedings
• Place as Subject:
  OSHA Region 3 ; West Virginia
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  2
• NIOSHTIC Number:
  nn:20053042
• Citation:
  Proceedings of the ASME 2004 Heat Transfer/Fluids Engineering Summer Conference, July 11-15, 2004, Charlotte, North Carolina, Volume 2, Parts A, and B. New York: American Society of Mechanical Engineers, 2004 Jul; :1285-1291
• Federal Fiscal Year:
  2004
• NORA Priority Area:
  Research Tools and Approaches: Exposure Assessment Methods
• Performing Organization:
  College of Egineering and Mineral Resources, West Virginia University
• Peer Reviewed:
  False
• Start Date:
  20010701
• Source Full Name:
  Proceedings of the ASME 2004 Heat Transfer/Fluids Engineering Summer Conference, July 11-15, 2004, Charlotte, North Carolina, Volume 2, Parts A, and B
• End Date:
  20050630
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:f0b27849b574bedc5a20c5ebfd6f6244af14827633d091ca47d1451f737e6d9331f4ce39d7e2f3a5ea6f4245a3681a20bb7bb6e38fc86beb791eb47f6512c98c
• Download URL:
  https://stacks.cdc.gov/view/cdc/215899/cdc_215899_DS1.pdf
• File Type:
  [PDF - 930.59 KB ]