湍流燃烧反应数值模拟的研究与实现

Research and implementation of numerical simulation of turbulent combustion

基于开源计算流体力学平台OpenFOAM和化学动力反应模型库Cantera设计出定常可压缩的湍流燃烧反应解算器,使用该解算器对Sydney钝体驻定火焰HM1进行数值模拟,模拟采用煤气和空气的详细反应机理,并根据计算结果得到燃烧流动组分浓度分布图和温度曲线变化图。通过计算结果与实验数据对比分析表明,模拟效果较好的符合燃烧组分变化的研究要求,这说明设计的解算器对定长可压缩燃烧流动问题有很好的计算仿真效果,体现了其可行性。湍流燃烧流动解算器的设计对于燃烧室性能预估有一定的参考价值。

A solver for steady compressible turbulent combustion is designed based on the open source CFD platform OpenFOAM and the kinetic reaction model of chemical libraries Cantera,then the solver is used to simulate the bluff-body stabilized Sydney flame HM1 based on the detailed chemical kinetic mechanisms of coalgas and air combustion reaction.The flow of combustion reaction component concentration distribution and temperature curve diagram are plotted according to the computational results.The comparison between the simulation and the experimental results shows that this solver has efficient computation for steady compressible turbulent combustion flow,which indicates that this solver is feasible.The solver has certain value on performance evaluation for the combustion chamber shape.