摘要
运用CFD技术,采用涡扩散(EDC,eddy dissipation concept)模型对某发动机单喷嘴燃烧的稳态燃烧流场进行了数值模拟,得到了燃烧室内的压力、速度、温度及燃气组分等参数的分布情况,并对其混合程度进行了评估。结构改进前后的计算结果对比表明,适当增加中心喷嘴的壁厚和缩进长度有利于燃烧室火焰的附着和提高燃烧室流场的均匀程度。
The combustion flow field in a single-injector is simulated by using the EDC （eddy dissipation concept） model. The distribution contours of static pressure, velocity, temperature and gas components in the combustion chamber are obtained. The simulation results show that increasing the wall thickness and the recess length of central nozzle properly are beneficial to the flame attachment and the uniformity coefficient improvment of the combustor flow field.
出处
《火箭推进》
CAS
2009年第6期27-30,共4页
Journal of Rocket Propulsion
关键词
涡扩散
单喷嘴
燃烧
缩进长度
EDC
single-injector
combustion
recess length
