基于详细化学反应机理的加力燃烧室湍流燃烧数值研究  

Numerical study of turbulent combustion in afterburner based on detailed chemical reaction mechanism

作　　者：王彦红 薛帅 贾玉婷[1] WANG Yanhong;XUE Shuai;JIA Yuting(School of Energy and Power Engineering,Northeast Electric Power University,Jilin 132012,China)

机构地区：[1]东北电力大学能源与动力工程学院,吉林吉林132012

出　　处：《大连理工大学学报》2024年第3期282-291,共10页Journal of Dalian University of Technology

基　　金：国家自然科学基金资助项目(52106196);吉林省教育厅科技项目(JJKH20220100KJ).

摘　　要：为了深入理解加力燃烧室的湍流燃烧特性,开展了燃油配置和内涵进气参数对燃烧性能影响的二维数值研究.基于燃油喷嘴和火焰稳定器附近涡系结构和涡量探究了油气掺混过程,通过燃烧室压力、温度、流速、湍动能等分布情况揭示了流场和温度场的组织状况,阐述了燃油、氧气的分布情况以及主要燃烧产物的生成机制,揭示了燃烧室典型截面温度和流速的分布特征.结果表明:燃油总流量增加整体上增强了三圈的燃烧性能,内涵进气参数下降减弱了内圈和中圈的燃烧性能,较高内涵进气压力是保障高效燃烧最关键的运行措施.In order to deeply understand the turbulent combustion characteristics in afterburner,the two-dimensional numerical study is performed on the influences of fuel configuration and internal intake parameters on combustion performance.Based on the vortex structure and vorticity near the fuel nozzle and flame stabilizer,the fuel-air mixing process is investigated.The organizations of flow field and temperature field are revealed through the distributions of pressure,temperature,flow velocity and turbulent kinetic energy in the combustion chamber.The distributions of fuel and oxygen and the formation mechanism of main combustion products are described.The distribution characteristics of temperature and flow velocity in typical sections of combustion chamber are revealed.The results show that the increase of total fuel mass flux strengthens the combustion performance of three laps as a whole,and the decrease of internal intake parameters weakens the combustion performance of inner and middle laps.Higher internal intake pressure is the most critical operation measure to ensure efficient combustion.

关 键 词：加力燃烧室 湍流流场 剪切涡量 燃烧机制 

分 类 号：V231.1[航空宇航科学与技术—航空宇航推进理论与工程]