摘要
对不同导流片结构参数下三通道进气驻涡燃烧室的流场分布、燃烧效率及总压损失系数进行数值模拟。结果显示,凹腔内形成理想双涡结构,增强了凹腔与主流的热质掺混,稳定凹腔点火源,大幅度提升燃烧效率。导流片结构参数a/E对燃烧效率、总压损失系数的影响最大,b/H、c/L对燃烧效率几乎没有影响,c/L对总压损失系数影响较大;当a/E=0.5,b/H=0.5及c/L=0.5时,燃烧室性能最佳,燃烧效率99.6698%,总压损失系数3.1268%。
The influence of different structural parameters of a three-duct trapped vortex combustor(TVC)with flow guide vanes on flow fields,combustion efficiency and total pressure loss coefficient are numerically studied.The results show that the ideal dual vortices can be formed in the cavity,which enhance the stability of flame and the mixing of gas,combustion efficiency.The structure parameter a/E influences the performance of the TVC significantly,while the changes of b/H and c/L have little effect on the combustion efficiency,but c/L has some effects on the total pressure loss coefficient.When a/E=0.5,b/H=0.5,c/L=0.5,the best performance of the TVC is achieved with the combustion efficiency 99.6698%,the total pressure loss coefficient 3.1268%.
作者
姚婷
刘景源
YAO Ting;LIU Jingyuan(School of Aircraft Engineering,Nanchang Hangkong University,Nanchang 330063,China)
出处
《弹箭与制导学报》
北大核心
2021年第3期15-20,共6页
Journal of Projectiles,Rockets,Missiles and Guidance
基金
国家自然科学基金(11102079,11562012)资助。
关键词
驻涡燃烧室
导流片
燃烧效率
总压损失系数
数值模拟
trapped vortex combustor
flow guide vanes
combustion efficiency
total pressure loss coefficient
numerical simulation
作者简介
姚婷(1995-),女,江苏南京人,硕士研究生,研究方向:航空宇航推进理论与工程。
