火箭推进2018，Vol.44Issue(3)：68-75,8.
气氧/气甲烷同轴剪切双喷嘴仿真研究
Simulation study on gaseous oxygen/methane double injectors with coaxial shear
韩树焘 1林洁 2俞南嘉 1张洋1
作者信息
- 1. 北京航空航天大学 宇航学院 北京100191
- 2. 北京航天试验技术研究所 北京100074
- 折叠
摘要
Abstract
The effects of different injector spacing on the combustion flow field were compared through the simulation study on gaseous oxygen/-methane double injectors with coaxial shear. The k -ε and k-ω SST turbulent models were used for each calculation condition. The simulation results show that the larger injector spacing will increase the heat load of the central region in the injector plane and the front wall surface of the combustor, while the smaller injector spacing can cause the reaction zone near the axis move forward. under the working condition of small injector spacing, the wall temperature of the middle-rear combustor is higher. The k -ω SST model can better reflect the status of recirculation zone, but the temperature of combustor wall and central region in the injector plane , as well as the concentra-tion of H2O component near the combustor axis, are all lower than those of the k -ε model.关键词
气氧/气甲烷/同轴剪切/双喷嘴/燃烧/湍流模型Key words
gaseous oxygen/gaseous methane/coaxial shear/double injectors/combustion/turbu-lent model分类
航空航天引用本文复制引用
韩树焘,林洁,俞南嘉,张洋..气氧/气甲烷同轴剪切双喷嘴仿真研究[J].火箭推进,2018,44(3):68-75,8.
