Three-Dimensional Simulations of Steady Perforated-Plate Stabilized Propane–Air Premixed Flames

A numerical
investigation of steady laminar premixed propane–air flames
is presented. A three-dimensional simulation has been performed to
examine the impact of operating conditions on steady-state characteristics
of a perforated burner flame. A numerical simulation has been carried
out using a reduced propane–air reaction mechanism having 30
species and 192 reactions. The results are validated against the one-dimensional
flat-flame result obtained using PREMIX. Effects of the equivalence
ratio, inlet velocity, hole–hole distance, and plate thermal
conductivity on flame stability are examined. The flame stand-off
distance increases with the increase in the inlet velocity. As the
equivalence ratio increases, the heat flux to the plate increases
as the flame moves closer to the plate. When the plate is adiabatic,
the conical flame rests on the plate. The flame stand-off distance
increases as the plate thermal conductivity is increased. The flame
moves downstream of the plate as the distance between the adjacent
holes is increased.