火箭推进2018，Vol.44Issue(6)：44-52,9.
气氧/气甲烷针栓发动机燃烧过程数值仿真研究
Study on combustion simulation of GOX/GCH4 pintle engine
摘要
Abstract
In order to study the combustion characteristics of the GOx/GCH4 pintle engine, a two-dimensional axisymmetric numerical calculation model of the engine was established. For the turbulence model, a standard k-ε model was adopted and the eddy-dissipation model with one-step mechanism was applied to simulate the combustion process. The numerical simulation results show that when the combustion reaction between oxygen and methane was stable, a large flame angle was observed, the temperature showed a banded distribution, and two sets of recirculation zones existed inside the combustion chamber. The combustion efficiency increases with the position of orifice located away from the pintle tip, but the flame angle is unchanged. As the annular gap increasing, the combustion efficiency decreases, but the flame angle increases. To the contrary, the combustion efficiency increases while the diameter of the orifice increases, the flame angle decreases. Within limits, the combustion efficiency decreased with flame angle increasing.关键词
针栓发动机/燃烧数值仿真/带状温度分布/喷孔位置/喷孔直径/环缝宽度Key words
pintle engine/combustion simulation/a band distribution of temperature/pintle orifice position/pintle orifice diameter/annular gap分类
航空航天引用本文复制引用
周康,李清廉,成鹏,常一冰..气氧/气甲烷针栓发动机燃烧过程数值仿真研究[J].火箭推进,2018,44(6):44-52,9.基金项目
国家自然科学基金资助项目(11472303,11402298) （11472303,11402298）
新世纪优秀人才支持计划(NCET-13-0156) （NCET-13-0156）
