双头部燃烧室两相燃烧流场数值研究

本文在贴体坐标系下对双头部火焰简内三维两相紊流燃烧过程进行数值模拟,采用代数雷诺应力模型模拟紊流粘性、EBU-二阶矩模型模拟燃烧反应速率、六通量辐射模型考虑热辐射对燃烧流场及火焰筒壁温的影响.分别运用颗粒轨道模型与颗粒随机轨道模型研究燃烧室内气液两相流动与燃烧过程,将所得出口温度分布与实验结果进行比较,均较为相符.

NUMERICAL STUDY OF TWO-PHASE REACTING FLOW IN ANNUAL COMBUSTOR WITH TWO-HEADS

Numerical analysis of three-dimensional two-phase reacting flows is developed in arbitrary curvilinear coordinates.Algebraic Stress model,EBU-SecondOrder turbulence combustion model and Six-Flux Radiation model are applied to numerical simulations.On the non-staggered grid system, the discretization equations are solved with SIMPLE algorithm.The couple of the gas phase and the liquid phase is carried out by the Particle Trajectory model and the Stochastic Particle model. The calculated exit temperature distribution coefficient and measured data are reasonable agreement. Predictions show the Particle Trajectory model is economical and it may be used for the engineering application.