An experimental and numerical study of a laminar triple flame

A lifted laminar axisymmetric diffusion flame is stabilized in the downstream region of a diluted methane jet that is surrounded by a lean methane-air co-flow and an outer co-flow of air. The flame shows a distinct triple flame structure in the stabilization region. It is investigated experimentally by PIV for the velocity field, OH-LIPF imaging, C2Hx-LIF imaging, and a 1D-Raman technique for major species concentrations, combined with a...