单头部/扇形/全环燃烧室贫油点火性能换算  

Conversion methods for lean ignition performances among single-sector,multi-sector and full annular combustors

作　　者：赵明龙 杨志民 林宇震[2] 刘金林 葛新 

机构地区：[1]中国航空发动机集团有限公司沈阳发动机研究所,沈阳110015 [2]北京航空航天大学能源与动力工程学院航空发动机气动热力国家级重点实验室,北京100191

出　　处：《航空动力学报》2017年第8期1822-1826,共5页Journal of Aerospace Power

摘　　要：通过单头部、扇形和全环燃烧室的点火性能试验,对比了3种试验件贫油点火边界结果的关联与差异,同时对差异原因进行了讨论分析。进一步地,基于Lefebvre点火模型,通过数据拟合处理方法获得了各试验件贫油点火边界的经验公式,并得到它们之间的换算方程。研究表明:不同类型燃烧室试验件的贫油点火边界变化规律相同;同一状态做对比,全环试验件的贫油点火油气比则明显低于单头部和扇形件的相应值。A series of ignition tests were conducted to study the similarities and differences of lean ignition limits among single-sector,multi-sector and full annular combustors.Furthermore,major factors causing the differences were analyzed.Based on Lefebvre＇s ignition model,empirical lean ignition limit correlations of different combustors were summarized by data fitting method,together with the conversion formulas there in.Results show that：different types of combustors exhibit similar lean ignition limit changing pattern,but the lean ignition fuel air ratio of full annular combustor are obviously lower than those of single-sector and multi-sector combustors under same conditions.

关 键 词：贫油 燃烧室 点火性能 旋流杯 索太尔平均直径 

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]