超小型水素ガスタービン用旋回流型試験燃焼器内での水素の燃焼特性

概要

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The combustion characteristics of hydrogen in a test swirl combustor for a micro gas turbine have been studied by varying the following parameters; the swirl number of a vane-type swirler, the throat diameter of an air nozzle and the mean air jet velocity through the nozzle throat. It was found that, with high degree of swirl, a stable hydrogen flame attached to a hydrogen injector were formed even in high velocity air streams because of the formation of a reverse flow zone in the downstream region of the injector. The configurations of the stable flames and the temperature distributions in the combustor were scarcely sensitive to the swirl number and the air jet velocity, but were sensitive to the air nozzle throat diameter. At small throat diameters of the nozzle, diffusion type short hydrogen flames were formed and the temperature distributions in the combustor became uniform just downstream of the flames.
社団法人日本機械学会の論文
1985-08-25