头部及掺混孔对三级旋流器燃烧室出口温度分布影响的试验

对4种不同三级旋流器方案和两种不同掺混孔排布方案的燃烧室在不同进口速度、油气比参数下的出口温度分布进行了常压试验研究,研究结果表明:各方案的出口温度分布系数随进口速度和油气比有所变化,但变化范围不大;中间旋流器与外旋流器旋向相反时,出口温度分布更为均匀;对于两种不同的旋流数组合0.7-1-1.5和1.5-1-0.8,前者出口温度分布系数对外旋流器旋向的改变更为敏感;与方案B相比,方案A的掺混孔排布更加适合该三级旋流器燃烧室;掺混孔排布要与头部结构相匹配,这样才能优化出口温度分布. 

Experiment on effect of dome and dilution holes on outlet temperature distribution for triple swirler combustor

Experiments were conducted to study the outlet temperature distribution of combustor for four different triple swirler schemes and two different dilution holes arrangement schemes with different inlet velocities and fuel-air ratios at fixed atmospheric pressure. The results show that: the outlet temperature distribution factors of different schemes change little with the inlet velocity and fule-ratio ratio; when intermediate swirler and outer swirler are counter-rotating, the outlet temperature distribution becomes more uniform; for two kinds of swirl number combination of 0.7-1-1.5 and 1.5-1-0.8, the outlet temperature distribution factor of the former is more sensitive to the change of outer swirler direction than that of the latter; compared with scheme B, the dilution holes arrangement of scheme A is more suitable for the triple swirler combustor; the dome and dilution holes arrangement should be matched properly in order to optimize the outlet temperature distribution.