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采用数值方法研究了一个高温燃烧产物环境中的抬举湍流H2/N2射流火焰,对火焰的自然和抬举特性进行了研究.采用标量联合概率密度函数(PDF)方法处理详细的化学动力学过程,而湍流流场采用一个多时间尺度(MTS)k-ε湍流模型计算.计算中结合了一套描述氢气氧化的详细化学反应动力学机理.计算结果和实验数据进行了对比,表明所采用的模型可以精确的模拟火焰抬举高度和自然的过程.
A numerical study of a turbulent jet of turbulent H2 / N2 jets in a high-temperature combustion environment was conducted to investigate the natural and lifting properties of the flame. The detailed chemical kinetic processes were handled using a scalar joint probability density function (PDF) The turbulent flow field is calculated using a multi-time scale (MTS) k-ε turbulence model, which incorporates a set of detailed chemical reaction kinetics describing hydrogen oxidation. Comparisons between the calculated and experimental data show that the model used can Accurately simulate flame lift height and natural processes.