摘要
为研究H2 引燃的煤油超燃混合问题 ,采用流体模型描述两相流动 ,气相反应系统的全N S方程风迎风TVD格式求解 ,液相扩散的Euler方程用NND格式求解 ,化学反应源项采用点隐处理 ,对单喷嘴喷H2 超声速燃烧、H2 引燃的煤油超燃混合问题进行了数值研究。获得了压力、密度、温度和组元浓度场的分布。结果表明 :与单喷嘴喷H2 相比 ,下游喷嘴H2 的射流穿透深度和扩散范围增大 ,燃烧区也变大 ;虽然煤油穿透深度大 ,但其扩散较H2 差 ,且下游出现无煤油区。
The mixing of atomized kerosene injected into a supersonic flow with hydrogen pilot flame was investigated numerically by using two-phase flow. Upwind TVD scheme was use to solve the full Navier-Stokes equations for multi-species reactive system. Eulerian equations for liquid phase were solved by NND scheme. A point implicit approach was used to deal with the source term produced by gas phase chemical reactions. The phase-interaction ODE equations were solved by second order Runge-Kutta approach. The distributions of pressure, species density, temperature, and nominal density of kerosene were obtained. The results show that hydrogen injected from the injector downstream has a better penetration and enlarges the combustion region. The penetration of kerosene is much higher than that of hydrogen. But kerosene is less spread, and there exists a droplet free region downstream the injector.
出处
《推进技术》
EI
CAS
CSCD
北大核心
2001年第6期500-504,共5页
Journal of Propulsion Technology
基金
国家自然科学基金(19882 0 0 5 )
中国科学院创新课题(KJCX2 L0 1)资助项目
关键词
超声速燃烧
煤油
两相流
数值模拟
氢气引燃方式
流场分布
Atomization
Combustion
Computer simulation
Hydrogen
Kerosene
Navier Stokes equations
Runge Kutta methods
Two phase flow
