CFD Analysis on Gas Distribution for Different Scrubber Redirection Configurations Slab Cut and Summary of Previous Sump Cut Analysis

Details

• Personal Author:
  Beck, Timothy W. ; Organiscak, John A. ; Rider, James P. ; Zheng Y ; Zhou L
• Description:
  The National Institute for Occupational Safety and Health (NIOSH), Pittsburgh Mining Research Division (PMRD) has recently developed a series of models utilizing computational fluid dynamics (CFD) to study gas distribution around a continuous mining machine (CM) with various fan-powered flooded bed scrubber discharge configurations in an exhaust curtain working face. CFD models utilizing species transport model without reactions in FLUENT were constructed to evaluate the redirection of scrubber discharge toward the mining face rather than behind the return curtain. The study illustrates the gas distribution in the slab (second) cut. The following scenarios are considered in this study: 100% of the discharge redirected back towards the face on the off-curtain side of the continuous miner; 100% of the discharge redirected back towards the face, but divided equally to both sides of the machine; and 15% of the discharge redirected toward the face on the off-curtain side of the machine, with 85% directed into the return. These models were compared to a model with a conventional scrubber discharge where air is directed away from the face into the return. The models were validated based on experimental data and accurately predicted sulfur hexafluoride (SF6) gas levels at four gas monitoring locations. One additional prediction model was simulated to consider a different scrubber discharge angle for the 100% redirected, equally divided case. This paper describes the validation of the models based on experimental data and the gas distribution results of the CFD models. [Description provided by NIOSH]
• Subjects:
  Mercury Mining Occupational Health Safety
• Keywords:
  Coal-mining Gases Health-hazards Health-protection Ionization Machine-operation Miners Mining-industry Models Safety-measures Safety-practices Safety-programs Scrubbers Sulfur Hexafluoride Underground-mining

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• Series:
  Mining Publications
• Publisher:
  Society for Mining, Metallurgy, and Exploration, Inc.
• Document Type:
  Text
• Genre:
  Proceedings
• Place as Subject:
  Colorado ; OSHA Region 3 ; OSHA Region 8 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PMRD - Pittsburgh Mining Research Division
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-7
• NIOSHTIC Number:
  nn:20050043
• Citation:
  2017 SME Annual Meeting, February 19-22, 2017, Denver, Colorado, preprint 17-019. Englewood, CO: Society for Mining, Metallurgy, and Exploration, Inc., 2017 Feb; :1-5
• CAS Registry Number:
  Sulfur hexafluoride (CAS RN 2551-62-4)
• Federal Fiscal Year:
  2017
• NORA Priority Area:
  Mining
• Peer Reviewed:
  False
• Source Full Name:
  2017 SME Annual Meeting, February 19-22, 2017, Denver, Colorado, preprint 17-019
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:4eb89a7d5c29797db09f3f816ea2eee84c316924d1ec8dfae4cf0dd462d53bf1e3fe541059250f0ee2f6b9523bd1558419c88e0c2155beb616d8358f15ea31a0
• Download URL:
  https://stacks.cdc.gov/view/cdc/228435/cdc_228435_DS1.pdf
• File Type:
  [PDF - 670.10 KB ]