本文采用FGM方法引入详细化学反应机理，并通过PPDF方法来考虑湍流与化学反应之间的相互作用，生成了用于部分预混湍流燃烧计算的湍流FGM查询表。采用湍流本生火焰对本部分预混燃烧模型进行了计算验证，并与实验结果以及FLUENT的部分预混燃烧模型计算结果做了对比，结果显示，本模型能较好地模拟湍流燃烧后的流场，主要组分、次要组分的分布与实验值吻合较好，表明本部分预混燃烧模型相对于FLUENT的部分预混燃烧模型有了较大改进。
The FGM （Flamelet-Generated Manifolds） method is used to consider the detailed chemistry mechanism, and the PPDF （Presumed Probability Density Function） is adopted to take into account the interaction between turbulence and chemistry. A turbulent FGM look-up table to be used in turbulent combustion calculation is generated and the turbulent Bunsen flame is calculated to validate this combustion model. Comparison is made between calculation results （both results of present model and FLUENT＇s partially premixed model） and experiment data. It shows that the flow field of turbulent combustion can be properly simulated and the primary composition and radicals distribution correspond well with the experiment data, which indicates that the present model improve a lot with respect to FLUENT＇s partially premix model.
参考文献
| [1] | J.A. VAN OIJEN;L.P.H. DE GOEY .Modelling of Premixed Laminar Flames using Flamelet-Generated Manifolds[J].Combustion science and technology,2000(0):113-137. |
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