RAMAN MEASUREMENTS IN A TURBULENT H-2/N-2 DIFFUSION FLAME

Simultaneous space and time resolved measurements of O2, N2, H2O and H-2 have been made using spontaneous Raman scattering in a turbulent H-2/N2 diffusion flame. A narrowband XeCl excimer laser working at 308 nm and an intensified multichannel array camera were used to give full information about all major species and spectral background simultaneously. The fluorescence background from OH radicals in the high temperature regions of the flame was taken into account by a background fitting routine. This paper presents new experimental results containing concentrations. temperatures, mixture fractions f, f-plots and rms of fluctuations of f in comparison to numerical predicted results obtained with a Reynolds stress flame model.