单头部/扇形/全环燃烧室贫油点火性能换算

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。 

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

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.