B-3 二重旋回気流微粒化燃料噴射弁の火炎特性に関する研究(燃焼I,一般講演)

概要

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The effects of swirling air flow, pressure drop Δp/pt and air-to-fuel ratio on the flame characteristics of spray flames on a double-swirl air-blast fuel injector were investigated at atmospheric pressure to obtain insights about the design of high-performance jet-engine fuel injectors. Laser sheet Mie scattering visualization was used in order to obtain the distributions of fuel droplets and a direct flame imaging system with an optical filter was used in order to obtain the distributions of OH radicals. A transition from a blue conical flame to a luminous disc flame suddenly occurred at a threshold outer swirl angle. The present paper discusses the flame shapes and the distributions of OH chemiluminescence and fuel droplets.
公益社団法人日本ガスタービン学会の論文
2008-10-01