Comparing Laser‐Induced Fluorescence Measurements and Computer Models of Low Pressure Flame Chemistry

Laser‐induced fluorescence measurements in low pressure flames, including hydrogen atom profiles, are examined as crucial tests of models of combustion chemistry. Both absolute and relative spatial profiles of reactive intermediate concentrations are useful for comparison. Careful temperature measurements for use as model input are emphasized. Radial OH LIF profiles in flames below 10 torr show an expanding flame which must be properly treated in model calculations. Diluted flames at pressures above 30 torr provide a preferred one‐dimensional fluid flow.