Simulations of flame acceleration and deflagration-to-detonation transitions in methane-air systems

Details

• Personal Author:
  Gamezo VN ; Kessler DA ; Oran ES
• Description:
  Flame acceleration and deflagration-to-detonation transitions (DDT) in large obstructed channels filled with a stoichiometric methane-air mixture are simulated using a single-step reaction mechanism. The reaction parameters are calibrated using known velocities and length scales of laminar flames and detonations. Calculations of the flame dynamics and DDT in channels with obstacles are compared to previously reported experimental data. The results obtained using the simple reaction model qualitatively, and in many cases, quantitatively match the experiments and are found to be largely insensitive to small variations in model parameters. [Description provided by NIOSH]
• Subjects:
  Confined Spaces Explosions Methane Mining Occupational Health Safety
• Keywords:
  Acceleration Author Keywords: Deflagration-to-detonation Transition Confined-spaces Explosive-atmospheres Explosive-gases Flame Acceleration Flammable-gases Gas-mixtures Gases Ignitability Methane-air Explosions Methanes Mine-gases Mining-industry Natural-gas Obstructed Channels

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• ISSN:
  0010-2180
• Document Type:
  Text
• Genre:
  Journal Article
• Place as Subject:
  District of Columbia ; OSHA Region 3
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Volume:
  157
• Issue:
  11
• NIOSHTIC Number:
  nn:20039822
• Citation:
  Combust Flame 2010 Nov; 157(11):2063-2077
• Contact Point Address:
  D.A. Kessler, Laboratory for Computational Physics and Fluid Dynamics, Naval Research Laboratory, Washington, DC, USA
• CAS Registry Number:
  Methane (CAS RN 74-82-8)
• Federal Fiscal Year:
  2011
• Peer Reviewed:
  True
• Source Full Name:
  Combustion and Flame
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:458319ed1f2aca1f7be4162e1aa065cf2a8dce1a191be41894e4c63f841f03544cb26d82f6584ddbaf85fffd0126f42b18b3239312728daf69d97e43d92f6277
• Download URL:
  https://stacks.cdc.gov/view/cdc/192909/cdc_192909_DS1.pdf
• File Type:
  [PDF - 1.77 MB ]