基于Greenwood叶间燃烧室实验模型的数值计算  

Numerical Simulation Based on Greenwood Inter-Vane Combustor Experimental Model

作　　者：杨阳[1] 王力军[2] 

机构地区：[1]贵州航空发动机研究所燃烧研究部,贵阳550081 [2]沈阳航空航天大学能源与环境工程学院,沈阳110136

出　　处：《南京航空航天大学学报》2016年第3期340-346,共7页Journal of Nanjing University of Aeronautics & Astronautics

基　　金：航空科学基金(2013ZB54009)资助项目

摘　　要：为分析新型叶间燃烧室的燃烧性能,以叶间燃烧室试验模型为研究对象,用Realizable k-ε湍流模型、非预混PDF燃烧模型,数值模拟了燃烧流场特性。燃油颗粒大部分在环形腔顶部区域蒸发混合,火焰在环形腔底部连通,形成旋流燃烧,涡轮径向斜槽内出现温度较高的火焰区。涡轮径向斜槽结构以及主流的卷吸作用对燃烧产物与一次气流的掺混存在影响。贫油燃烧方式工况燃烧性能较优,富油燃烧方式工况的径向平均出口温度线型较好。计算结果与相同操作条件下的试验结果符合较好。In order to analyze the combustion performance of inter-vane combustor,the design model of ultra-compact combustor is taken as the research object,and using Realizable k-εturbulence model and non-premixed PDF combustion model,the combustion flow field characteristics are simulated.Most of the fuel particles evaporate and mix at the top of the annular cavity,and the flame is connected on the bottom,thus forming the swirl combustion,then the high-temperature flame region appears in the rudiat slot.Radial slot structure and main jet entrainment affect the mixture of combustion products and main jet.Lean-fuel combustion conditions have a better combustion performance,and outlet temperature distribution lines of rich-fuel combustion are more similar to the ideal parabolic.Simulation results agree well with the experimental results under the same regular pattern condition.

关 键 词：叶间燃烧室 燃烧性能 数值模拟 

分 类 号：TK474[动力工程及工程热物理—动力机械及工程]