Journal of Mechanical Science and Technology

The Korean Society of Mechanical Engineers (대한기계학회)
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Investigation of Velocity Boundary Conditions in Counterflow Flames

  • Park, Woe-Chul (Department of Safety Engineering, Pukyong National University) ;
  • Anthony Hamins (Building and Fire Research Laboratory, National Institute of Standards and Technology, Gaithersburg)
  • Published : 2002.02.01
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Abstract

The effects of velocity boundary conditions on the structure of methane-air nonpremixed counterflow flames were investigated by two-dimensional numerical simulation. Two low global strain rates, 12 s$\^$-1/ and 20 s$\^$-1/, were considered for comparison with measurements. Buoyancy was conformed to have strong effects on the flame structure at a low global strain rate. It was shown that the location where a top hat velocity profile was imposed is sensitive to the flame structure, and that the computed temperature along the centerline agrees well with the measurements when plug flow was imposed at the inner surface of the screen nearest the duct exit.

Keywords

References

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