低ダムケラー数場における火炎構造の観察

抄録

We discussed the flame structure of piloted lean turbulent premixed flames, equivalence ratios of which were around the lean flammable limit. Laser tomography, chemiluminescence detectors, LDV and a thermocouple were used simultaneously for observing lean turbulent premixed flames with silica powder seeded. As a result, the transition of flame structure from a distributed reaction zone to a wrinkled laminar flame was observed in detail with the observing position being traversed from upstream to downstream.