Abstract: Experiments were conducted to study the influence of the trailing jet slot structure of the edge blowing mixture curtain (EBMC) flameholder on the combustion performance. Three types of jet slot structure were investigated under the condition of main flow of 50m/s and 573K including continuous slot, discontinuous wide troughs and orifices. Their lean flame stability, combustion efficiency and pressure loss factor were compared. Results show that the continuous slot structure is better than other two types of discontinuous structure under experimental conditions because of its higher combustion efficiency, wider lean flame stability and lower pressure loss.

Key words: Flame holder;Jets;Combustion performance;Structure parameters

摘要： 为了探讨尾缘吹气式火焰稳定器的射流喷口形状对燃烧性能的影响,在来流50m/s,573K条件下,分别对连续长缝、不连续宽缝、均布圆孔三种不同喷口形状的火焰稳定器的燃烧性能进行了实验研究,对比了它们的贫熄特性、燃烧效率和流阻损失。研究发现,在实验条件范围内,连续长缝形喷口稳定器的燃烧性能较其他两种不连续喷口稳定器优越,具有较高的燃烧效率、较宽的贫熄边界和较小的流阻损失。

关键词: 火焰稳定器;射流;燃烧性能;结构参数