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Fires in Mass Transit Vehicles Guide for the Evaluation of Toxic Hazards (1991) / Chapter Skim
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2. Fire Modeling
Pages 11-16

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From page 11...
... Very little of this effort is aimed at mass transit vehicles and none at such specific problems as fire in mass transit vehicles in a lengthy TRANSFER ~ \~7 tA ~ MIXING I RADIATION ~ _ TURBULENT' MIXING ~ ~ ~ .
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From page 12...
... The mathematical fire models are of a number of types requiring different levels of computer capability for the solutions of equations. The deterministic types include field models that divide space into small elements and require greater computational resources to solve the pertinent partial differential equations for the flow of hot buoyant gases derived from the burning of fuels.
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From page 13...
... is taken to be the solution of coupled nonlinear partial differential equations for conservation of mass, momentum, and energy on a refined mesh (Baum and Rehm, 1984; Ku et al., 1976; Hwang et al., 1976; Yang et al., 19841. While frequent lip service is paid to the possibility of an undertaking of a level of sophistication intermediate to zonal and field models, limited intermediate effort seems to be under way.
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From page 14...
... But such practices amount to mere curve-fitting unless the parameterizations are then held invariant and the code is demonstrated to yield experimentally verified results over a substantially broader range of parameter assignments. Finally, quantification of even gridscale phenomena may be highly approximate (possibly with uncertain error)
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From page 15...
... 1976. "Numerical Modeling of Unsteady Buoyant Flows Generated by Fire in a Corridor, Sixteenth Svmoosium (international)
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From page 16...
... 1984. "Modeling of Turbulent Buoyant Flows in Aircraft Cabins, Combustion Science and TechnoloeY, Vol.
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Key Terms

  • transit vehicles
  • buoyant flows
  • mass transit
  • fire models
  • partial differential

  • lower layers
  • fire growth
  • differential equations
  • fire safety
  • multiple plumes

  • fire protection
  • ceiling layer
  • combustion institute
  • field models
  • compartment fire

  • computer models
  • existing models
  • lower layer
  • hot upper
  • vitiated air

  • key output
  • physical experiment
  • computer results
  • pyrolyzed vapor
  • trace levels

  • plausible results
  • spatially refined
  • limited attempt
  • experimental validation
  • types requiring


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