Scaling and flow similarity considerations to develop a 1/40th scaled aerodynamic model of a longwall coal mine for methane hazards investigation [2022]

Details

• Personal Author:
  Bogin G ; Brune, Jürgen F. ; Gallagher K ; Juganda A ; Pinheiro H ; Sandoval N ; Wilson F
• Description:
  The present work discusses the nuances of scaling and flow similarity to develop a 1/40th scale version of a longwall coal mine. Details on the geometric, kinematic, and dynamic scaling of the physical model are presented and discussed. This works also discusses using a 30% CO2 - 70% He gas mixture as a surrogate for methane. It also presents the implications of various Reynolds numbers (ranging from 7,000 to 140,000) and rotation of the shearer drums in the dynamic representation of the airflow and gas mixtures in the physical scaled model. [Description provided by NIOSH]
• Subjects:
  Mining Occupational Health Safety Ventilation
• Keywords:
  Author Keywords: Longwall; Methane Ignition; Flow Scaling Mining Industry; Longwall Mining; Coal Mines; Gas Flow; Gas Mixtures; Methane Control; Ventilation; Explosive Gases;
• ISSN:
  2524-3462
• Document Type:
  Text
• Funding:
  Contract
• Genre:
  Journal Article
• Place as Subject:
  Colorado ; OSHA Region 8
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  39
• Issue:
  3
• NIOSHTIC Number:
  nn:20065222
• Citation:
  Min Metall Explor 2022 Jun; 39(3):917-926
• Contact Point Address:
  H. Pinheiro, Colorado School of Mines, Golden, CO, USA
• Email:
  hamiltonhonoratopin@mines.edu
• CAS Registry Number:
  Methane (CAS RN 74-82-8)
• Federal Fiscal Year:
  2022
• Performing Organization:
  Colorado School of Mines
• Peer Reviewed:
  True
• Start Date:
  20170824
• Source Full Name:
  Mining, Metallurgy & Exploration
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:720772e9a3d65e86edacad873751b6307a78b9c02cf1c481e899684b8376fb603ebf8b7943ba2727161d765366667beca3d6a6085fc7261adae2367566856c95
• Download URL:
  https://stacks.cdc.gov/view/cdc/249373/cdc_249373_DS1.pdf
• File Type:
  [PDF - 2.35 MB ]