特集—温度計測
非定常燃焼場のための条件付き抽出2ラインOH-PLIF温度計測
キーワード:
Temperature measurement,
Planar laser induced fluorescence,
Two-line method,
Coaxial jet flame,
Microscale combustion
2013 年 55 巻 173 号 p. 234-240
詳細
2013 年 55 巻 173 号 p. 234-240
A new two-line OH-PLIF has been developed for flame temperature measurement using a single LIF setup. The longitudinal flame temperature distribution of manipulated coaxial premixed jet flame is obtained with the conditionallyaveraged OH fluorescence intensities at the OH front taken with two different excitation lines. CO emission characteristics of the controlled flame are discussed on the basis of the local fuel and the flame temperature. Flame temperature in a quartz microchannel is also measured by the phase-locked OH 2-line method, where the trigger signal is obtained with CH* chmiluminescence. It is found that the flame temperature increases after the ignition and gradually decreases during upstream propagation, leading to thermal quenching.
