平展流燃烧过程的数值模拟

Numerical Simulation of Flat Flow Combustion Process

简述了ESCIMO湍流燃烧理论的要点。采用差分数值求解的方法 ,对描述平展流燃烧过程的时均方程及ESCIMO湍流燃烧理论的“经历”和“统计”方程进行组合求解 ,得出了平展流燃烧过程近壁 (z′/D =0 .2 4 )截面上的温度和组分分布 ,揭示了平展流燃烧区域温度最高且变化平缓 ,然后逐渐降低的重要特点。其温度及组分的变化规律与实验分析结果是一致的 ,基本能反映实际燃烧过程的特征 ,表明文中所阐述的数值分析方法是可行的。

Summarized the essential points of the ESCIMO theory.The time-average equations describing the open flat flow combustion process and,the “Biography” and “Demography” equations of the ESCIMO theory are numerically simulated by the difference method.It was obtained that the distribution of temperature and composing content concentration colozed by the surface ( z′/D=0.24 ) of open and flat flow combustion process.The results reveal that one of the main features of open and flat combustion process is that temperature of combustion area is the highest and dropped slowly.The variational laws agree with the simulating results and test results.It shows that the method of numerical analysis expounded in the ppaer is practicable.