三旋流燃烧室的数值模拟与试验  

Numerical simulation and experiment of triple swirler combustor

作　　者：莫妲 程明 万斌 张军峰 林宏军 

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

出　　处：《航空动力学报》2017年第11期2568-2575,共8页Journal of Aerospace Power

基　　金：国家自然科学基金(91441126)

摘　　要：为研究三旋流高温升燃烧组织技术,借助CFD技术对三旋流单头部燃烧室进行了数值模拟,采用结构化网格生成技术、realizable k-ε湍流模型、PDF(概率密度)燃烧模型等对其进行模拟计算,获得了燃烧室内流场和燃烧场分布及各方面的燃烧性能参数,同时试验研究了三旋流单头部燃烧室的火焰筒壁温、出口温度分布、燃烧效率、排气冒烟数。结果表明:三旋流燃烧室的温升高达1 130K,燃烧效率超过99%,火焰筒壁温分布较好,冒烟数不高于20;所采用的数学模型合理、计算方法可行,与试验数据基本吻合,其结果可为三旋流燃烧室设计提供参考。In order to study the combustion technology of the high temperature rise triple swirler combustor,numerical simulation was conducted for single dome triple swirler combustor by means of CFD technology.Structured grids were meshed on computational domain of the triple swirler combustor.Realizable k-εturbulent model and PDF（probability density function）combustion model were applied to the numerical simulation.The flow and combustion fields of the combustor and combustor performances in every aspect were obtained.Furthermore,wall temperature of flame tube,exit temperature distribution and combustion efficiency as well as smoke number were investigated experimentally.The results indicated that the temperature rise of triple swirler combustor was 1130 Kwith 99%combustion efficiency and good wall temperature distribution.The smoke number was only 20.The mathematical models and numerical methods were reasonable and the simulation results accorded well with the experimental data.The numerical results provide an important reference to the design of the triple swirler combustor.

关 键 词：燃烧室 高温升 三旋流 结构化网格 火焰筒壁温 出口温度分布 

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]