部分予混合拡散火炎の火炎構造 : CARSによる吹飛び限界近傍の火炎構造の研究

概要

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An experimental study was made of the blow-off limit of rich fuel-air flames established in the forward stagnation region of a porous cylinder from which premixed methane and air were ejected into a uniform air stream. With measuring temperature and species concentration profiles by CARS (Coherent Anti-Stokes Raman Spectroscopy), the blow-off mechanism has been investigated. An application of CARS makes it possible to measure flame structure very near the bow-off limit, the measurement of which is impossible with a thermocouple and gas chromatography. It has turned out that the blow-off process is governed by the decrease in the maximum temperature for a low equivalence ratio (φ) of the premixed gas, while it is governed by the heat loss from the flames for high φ.
社団法人日本機械学会の論文
1991-01-25