CFD Modeling of Fire Spread Along Combustibles in a Mine Entry

Details

• Personal Author:
  Edwards JC ; Hwang, Charles C.
• Description:
  A computational fluid dynamics (CFD) program was applied to fire spread along combustibles in a ventilated mine entry. The rate of flame spread was evaluated for the ribs and roof of a coal mine entry, timber sets, and a conveyor belt. The CFD program models char-forming materials with temperature-dependent thermal properties. The program solves three-dimensional time-dependent flow equations with a mixture fraction model for the gas phase reactions. Radiant heat exchange is evaluated for nonscattering gas. The CFD program predicted a flame spread rate of 0.0145 m/sec for an actual coal mine fire in which the estimated flame spread rate was 0.0086 m/sec. This overestimated flame spread rate was a possible consequence of the presence of inert materials in the mine entry's roof and ribs. CFD fire spread rate predictions of 0.043 m/sec and 0.73 m/sec bounded the measured value of 0.27 m/sec for fire spread along Douglas-fir timber sets in a tunnel. [Description provided by NIOSH]
• Subjects:
  Mining Occupational Health Safety
• Keywords:
  Coal-mining Combustible-materials Hazards Injuries Mine-fires Mining-industry Models Safety-research Underground-mining Ventilation
• Series:
  Mining Publications
• Publisher:
  Society for Mining, Metallurgy, and Exploration, Inc.
• Document Type:
  Text
• Genre:
  Proceedings
• Place as Subject:
  OSHA Region 3 ; Pennsylvania
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRL - Pittsburgh Research Laboratory
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-5
• NIOSHTIC Number:
  nn:20029914
• Citation:
  2006 SME Annual Meeting and Exhibit, March 27-29, St. Louis, Missouri, Preprint 06-027. Littleton, CO: Society for Mining, Metallurgy, and Exploration, Inc., 2006 Mar; :1-5
• Contact Point Address:
  NIOSH Pittsburgh Research Laboratory, P.O. Box 18070, Pittsburgh, PA 15236
• CAS Registry Number:
  Carbon monoxide (CAS RN 630-08-0)
• Federal Fiscal Year:
  2006
• Peer Reviewed:
  False
• Source Full Name:
  2006 SME Annual Meeting and Exhibit, March 27-29, St. Louis, Missouri, preprint 06-027
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:e0c968ce884337409af06427615281a888ff32a3b4492b67107559e319bce9a690419404e814ca4bf8e157482552fc5ec175572f340995adad8d8b0963d715f9
• Download URL:
  https://stacks.cdc.gov/view/cdc/221165/cdc_221165_DS1.pdf
• File Type:
  [PDF - 188.51 KB ]