Gravcity Effects on Steady Two-Dimensional Partially Premixed Methane-Air Flames

摘要

Under normal-gravity conditions the flame heat release produces both flow dilation and buoyancy effects. While it may be possible to minimize gravitational effects in a fully premixed flame by isolating buoyancy effects To the lower-density postflame region or plume, this cannot be accomplished in nonpremixed flames. It is known That partially premixed flames can contain two reaction zones, one with a premixed-like structure and the other Consisting of a transport-limited nonpremixed zone (in which mixing entrainment effects are significant).