The effect of coflow velocity on a lifted methane-air jet diffusion flame

摘要

The effect of coflow veloicty on flame liftoff is studied using numericla simulations of methane-air diffufsion flames.The nuemrical model solves the time-dependent,axisymmetric (2-D),Navier-Stokes equations coupled to submodels for chemical reaction and heat release,soot formaion,and radiation transport.The computations predict a flame structure similar to that observed experimentally.THe flame stabilization point is located on the stoichiommetric surfac ein the inner shear layer.