Simultaneous multiple-point measurements of OH in combustion gases using planar laser-induced fluorescence

The imaging of planar laser-induced fluorescence (PLIF) has been used for simultaneous, multiple-point measurements of OH concentration in a variety of combustion flows including a premixed laminar flat flame, a premixed turbulent flame, a sooting flame, and a nonpremixed turbulent flame. Sheet illumination from a tunabale laser was used to excite the fluorescence which was detected using an image-intensified, Reticon array camera. Experimental results are presented and the detectivity and resolution of the technique are discussed.