带双扰流器喷雾装置的燃烧室出口温度场试验研究

本文采用装有3只小流量双径向扰流器混合杯式喷雾装置的二元矩形试验燃烧室,在常压和进口空气不加温条件下作燃烧试验,研究了不同的双扰喷雾装置对燃烧室的出口温度分布质量的影响。试验表明:正确设计的双扰喷雾装置相对于离心喷嘴将明显改善燃烧室出口温度分布质量;第一扰流器流量应小于第二扰流器流量;第二导流筒长度不应妨碍中心离心喷嘴油雾锥形成;相邻喷雾装置中气流旋向应相同。这对我国三大部件中短环形燃烧室研制有参考价值。

STUDY OF THE EXIT TEMPERATURE OF COMBUSTOR WITH DUAL SWIRLER SPRAYER DEVICES

A rectangular combustor with three dual-radial-swirler mixing cup sprayers, which have a centrifugal primer atomizer from BK-1 engine respectively, was used. With the view of studying the effect on combustor exit temperature distribution by different configuration of the dual -swirler sprayer devices, the combustion tests are conducted under atmospheric pressure air flow without heating. The results show that the air flow division between the first and the second swirler, the length of mixing cup, the rotation direction between adjacent sprayers are the important factors for Pattern Factor value.The reasonably designed sprayer with dual-swirler is able to improve the exit temperature distribution quality significantly, and the Pattern Factor is reduced a value of 0.06-0.09. The further study of the sprayer of dual-radial swirler will be useful to the short annular combustor development in advanced aeroengine design.