An experimental and numerical investigation of the structure of steady two-dimensional partially premixed methane-air flames

摘要

Steady two-dimensional partilly premixed slot-burner flames established by introducing a rich fuel-air mixture from the inner slot and air from the two outer slots are investigated.Numerical simulations are conducted usin detailed chemicstry,velocity measurements are made using particle image velocimetry,and images of the chemiluminescent reaction zones are obtaiend.Two reaction zones are evident; one in an inner rich-side prmixedlike flame and the other in an outer lean-side non-premixed flame.