应用数学和力学2001，Vol.22Issue(4)：411-419,9.
具有H2引燃的CH4、煤油超声速混合的三维数值研究
Numerical Studies on the Mixing of CH<sub>4</sub> and Kerosene Injected Into a Supersonic Flow With H<sub>2</sub> Pilot Injection
摘要
Abstract
Two-fluid model and divisional computation techniques were used.The multi-species gas fully N-S equations were solved by upwind TVD scheme. Liquid phase equations were solved by NND scheme. The phases-interaction ODE equations were solved by 2nd Runge-Kutta approach. The favorable agreement is obtained between computational results and PLIF experimental results of iodized air injected into a supersonic flow. Then, the numerical studies were carried out on the mixing of CH4 and kerosene injected into a supersonic flow with H2 pilot injection. The results indicate that the penetration of kerosene approaches maximum when it is injected from the second injector. But the kerosene is less diffused compared with the gas fuels. The droplet free region appears in the flow-field. The mixing mechanism of CH4 with H2 pilot injection is different from that of kerosene. In the staged duct, H2 can be entrained into both recirculation zones produced by the step and injectors. But CH4 can only be carried into the recirculation between the injectors. Therefore, initiations of H2 and CH4 can occur in those regions. The staged duct is better in enhancing mixing and initiation with H2 pilot flame.关键词
碳氢燃料/超声速流/超声速燃烧/数值计算分类
数理科学引用本文复制引用
徐胜利,岳朋涛,韩肇元..具有H2引燃的CH4、煤油超声速混合的三维数值研究[J].应用数学和力学,2001,22(4):411-419,9.基金项目
国家自然科学基金资助项目(19882005)；863高技术青年基金资助项目(863-2.99.9) （19882005）
