超紧凑燃烧室燃烧组织方式影响燃烧性能的数值研究  

Numerical studies of combustion mode influence on the performance of UCC combustor

作　　者：杨阳[1] 王力军[2] 

机构地区：[1]沈阳航空航天大学航空航天工程学部(院),沈阳110136 [2]沈阳航空航天大学能源与环境学院,沈阳110136

出　　处：《沈阳航空航天大学学报》2015年第2期1-6,共6页Journal of Shenyang Aerospace University

基　　金：航空科学基金(项目编号:2013ZB54009)

摘　　要：以试验室的超紧凑燃烧室设计模型为研究对象,用Realizable k-ε湍流模型模拟高速旋转湍流,用非预混燃烧的混合分数/PDF模型模拟燃烧反应。通过超紧凑型燃烧室在贫油燃烧、化学当量比燃烧和富油燃烧等不同燃烧组织方式下的燃烧温场、出口温度场品质、燃烧效率以及污染物排放等燃烧性能的对比分析,研究了不同的燃烧组织方式对超紧凑燃烧室的燃烧性能影响。贫油燃烧组织方式对环形凹腔内燃烧影响较大,对于当量比增大的富油燃烧组织方式,火焰在凹腔底部连通,并通过叶片径向斜槽与一次空气流混合并实现完全燃烧;贫油燃烧方式的燃烧效率、出口温度品质和污染物排放等燃烧性能较好。计算结果与他人试验结果在燃烧室中央区域符合较好,对UCC燃烧室设计具有参考价值。Taking the design testing model of UCC combustor as the research object,numerical simulation of high speed rotating turbulent flow is conducted with Realizable k-ε turbulence model,so is simulation of combustion reaction with non-premixed PDF combustion model. Through the comparison and analysis of the combustion performance such as temperature distribution,quality of outlet temperature field,combustion efficiency and pollutant emission under three different combustion modes like the lean-fuel combustion,the stoi-chiometric ratio combustion and rich-fuel combustion,the influence of combustion mode on the performance of ultra-compact combustor is examined. Lean combustion mode has a greater impact on the combustion in the cavity. In the rich-fuel combustion,flame connected in the bottom of the cavity and mixed with the pr-mary air stream through the radial chute,and complete combustion was achieved. Combustion efficiency, quality of outlet temperature field and pollutant emission are better in lean-fuel combustion mode. The results＆amp;nbsp;are consistent well with other similar studies in the combustor center area,and have referential value to the UCC combustor design.

关 键 词：超紧凑燃烧室 贫油燃烧 富油燃烧 燃烧性能 数值研究 

分 类 号：TK474[动力工程及工程热物理—动力机械及工程]