対向噴流予混合火炎における化学発光計測

概要

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Chemiluminescence emission from opposed jet burner flames was measured by a CCD (Charge Coupled Device) camera with an image intensifier. Radial profiles of the emission intensity were obtaine by the Abel transform of results of the side-on observation. The profiles of emission intensity of these radicals are similar and each peak is located at the center of the flame zone. The emission of C_2 and CH radicals produced in the early stage of the combustion reaction was observed on the burned gas side of the flame zone where the mean temperature is significantly high, suggesting that unburned mixture exists even on the burned gas side of the flame zone. From the emission profiles of OH radical which can be used as a measure of the reaction zone, it can be seen that the outer diameter of the flame zone increases with the mixture supply velocity, while the inner diameter remains constant. It was found that the profiles of OH emission intensity and NO concentration are similar. This fact suggests that NO originating from prompt NO is predominant in the distributed reaction zone.
一般社団法人日本機械学会の論文
1993-04-25