予混合球状伝ぱ火炎の形状に及ぼす火炎不安定性の影響(熱工学,内燃機関,動力など)

概要

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The effect of flame instabilities on the flame surface of spherical premixed flames at various Lewis numbers has been studied experimentally using laser tomography technique. For laminar flames at low Lewis numbers, what appear to be cracks, which might also be regarded as cusps, in the flame surface were observed. For turbulent flames, flame surfaces were found to be corrugated by turbulence indeed. At the same time, the cracks were also observed for low Lewis number mixtures. The Laser tomography technique enabled unstable wave number associated with cracks observed to be measured for both laminar and turbulent flames. The results are compared with the theoretical framework of the stability analysis of Bechtold and Matalon. As a result, it has been found that turbulent flames at low Lewis numbers are affected not only by turbulence but also by flame instability.
社団法人日本機械学会の論文
2002-01-25