尾缘吹气稳定器缝宽对燃烧性能影响的试验  

Experimental on the effects of jet exit width on EBMC flameholders' combustion performance

作　　者：杨阳[1] 马文杰[1] 樊未军[1] 岳明[1] 杨茂林[1] 

机构地区：[1]北京航空航天大学能源与动力工程学院,北京100083

出　　处：《航空动力学报》2008年第5期858-864,共7页Journal of Aerospace Power

摘　　要：为了探讨尾缘射流出口缝宽对燃烧性能的影响,在来流λm=0.1,0.18,0.25和Tm=573,673,773 K状态条件下,分别对缝宽为1,2,4 mm的尾缘吹气式稳定器和V型稳定器的燃烧性能进行了试验研究,对比分析了它们的贫熄特性、温度分布和燃烧效率.燃烧试验结果表明缝宽对尾缘吹气式稳定器燃烧性能有明显影响.在本模拟条件下,缝宽较窄的稳定器贫熄边界较宽,缝宽为1 mm的尾缘吹气式稳定器贫熄边界最宽;从出口温度分布可以看出,缝宽小的尾缘吹气式稳定器高温区域较大;缝宽较小的稳定器燃烧效率较高,缝宽1 mm的稳定器燃烧效率最高.To study the effects of jet exit width on the combustion performance, the combustion performance of edge blowing mixture curtain flameholders （EBMC） and a V gutter with 1mm, 2mm or 4mm jet exit width was investigated experimentally under λm =0. 1, 0. 18,0. 25 and Tm=573 K,673 K,773 K condition, and the lean limit of the flame stabilization, temperature distribution and combustion efficiency of flameholders were compared and analyzed. The results of combustion experiments show that jet exit width affect EBMC flameholders combustion performance evidently. Under the simulation condition, the lean limit of the flame stabilization is wider when jet exit width is narrower, so lean limit of the flame stabilization of lmm jet exit width EBMC is widest. The temperature distribution of flameholders shows that high temperature area of narrow jet exit EBMC flameholders is bigger. And combustion efficiency is higher when flameholders jet exit width is narrower, so combustion efficiency of lmm jet exit width EBMC is highest.

关 键 词：航空、航天推进系统 火焰稳定器 气动稳定 加力燃烧 

分 类 号：V231.2[航空宇航科学与技术—航空宇航推进理论与工程]