The temperature and absolute OH concentration fields in the methane Bunsen flames with N2, CO2 and H2O diluents were obtained.
The OH absorption cross sections at different heights from the nozzle were obtained in methane flames with different diluents.
The effects of different diluents on temperature and OH concentration profiles in methane flames were investigated.
Comparisons between the experimental results and the numerical simulations of chemical kinetics were made.