パルス燃焼器の熱発生速度に関する実験的研究

概要

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Heat release rate in a gas-fired pulse combustor has been measured by detecting OH chemiluminescence intensity to explain the fundamental operating mechanism of the pulse combustor. A square type pulse combustor with full optical access into the combustor was used in this experiment. The effects of changing the equivalence ratio and changing the mass flux of the reactants passing through the combustion chamber on the heat release rate as well as the combustion chamber pressure were studied in detail. Results indicate that combustion never stops under any operating condition, and this continuing combustion causes re-ignition to the next combustion cycle. It was found that the pulse combustion satisfies the Rayleigh's criterion. The effect of equivalence ratio on the oscillation energy is weak ; on the other hand, the effect of mass flux is significant. For oscillation stability, under constant equivalence ratio, there exists an optimum mass flux creating an optimum mixing for this particular pulse combustor.
社団法人日本機械学会の論文
1986-07-25