尾缘吹气式火焰稳定器燃烧性能研究

Research on Combustion Performance of the Edge Blowing Mixture Curtain Flameholder

在初步试验研究的基础上 ,对尾缘吹气式稳定器进行了结构改进 ,并进行了燃烧性能试验研究。探讨了新型稳定器的贫熄特性 ,分析了尾缘吹气速度与供油量对燃烧性能的影响 ,比较了稳定器前方供油与稳定器内供油的不同供油方式下的燃烧性能 ,并和 V型稳定器性能进行了对比。研究结果表明 ,新型稳定器是一种能稳定工作的可控高效低阻稳定器 ,在未来发动机加力尤其是外涵加力上具有应用前景。尾缘吹气并供油 ,改善了燃烧区燃油浓度分布。燃烧性能优于槽宽大 1倍的 V型稳定器。

On the basis of elementary research,the geometry structure of the edge blowing mixture curtain (EBMC) flameholder was improved and the experimental study on the combustion performance of the EBMC flameholder was carried out in 2D afterburning test rig.The flame stability,the influence of jet velocity and fuel supply at the trail edge on the combustion performance and the performance difference between fuel supply from the frontal injector and jet curtain were analyzed.At the same time,V-gutter flameholder was used to compare with the new type flameholder.The results show that the new type flameholder is a controllable flameholder,that can work stably with higher efficiency and lower pressure loss.It is expected to be used in future aero-engine,especially its by-pass afterburner.