Dispersion of Dust in a Channel by a Turbulent Gas Stream

Details

• Personal Author:
  Hartz TN ; Hwang, Charles C. ; Singer, Joseph M.
• Description:
  The Bureau of Mines formulated a method for calculating the concentration of entrained dust from a dust deposit by a turbulent gas stream. In particular, a diffusion equation is used to calculate dust concentrations in a channel following an explosion. Dust leaving the channel walls was treated as originating from stationary or moving, and single or multiple material sources. Formulas and sample computations for various types of dust sources in circular and rectangular channels are given, based on experimental entrainment rates. The analysis predicts the dust concentration as a function of time and channel space. The results appear to agree with the physical characteristics of explosion- driven dust dispersion in a 0.6-M-diameter, 50-m-long explosion tunnel. The analysis is also applied to simultaneous and consecutive dispersion of coal and rock dust from simulated coal mine surfaces (walls, floor, roof, and ribs). [Description provided by NIOSH]
• Subjects:
  Occupational Health Safety
• Series:
  Mining Publications
• Subseries:
  Report of Investigations
• Document Type:
  Text
• Genre:
  Conference Publications ; Case Report
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRC - Pittsburgh Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-29
• NIOSHTIC Number:
  nn:10000143
• NTIS Accession Number:
  PB-233492
• Citation:
  NTIS: PB 233 492; :1-29
• Federal Fiscal Year:
  1974
• Peer Reviewed:
  False
• Source Full Name:
  NTIS: PB 233 492
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:d95870214fdb3bc16d07ac0055c5b9ca92a776de1761f9bc8a08557560ebf395b46623c80c5f0282a02fbf4546bbc1e9aced8ddf6acea83a6e99a0bef2d8623d
• Download URL:
  https://stacks.cdc.gov/view/cdc/237730/cdc_237730_DS1.pdf
• File Type:
  [PDF - 1.50 MB ]