| 小火焰模型在贫燃预混火焰中的研究 |
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| 引用本文： | 侯凌云,杨成仁,傅维标.小火焰模型在贫燃预混火焰中的研究[J].工程热物理学报,2003,24(5):873-876. |
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| 作者姓名： | 侯凌云 杨成仁 傅维标 |
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| 作者单位： | 清华大学工程力学系,北京,100084 |
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| 摘 要： | 由层流小火焰库引入详细化学反应机理,通过简化的PDF方法计算组分浓度、平均温度和密度等变量,以钝体火焰稳定燃烧室和某燃气轮机上的燃烧室为例,模拟甲烷/空气贫燃条件下预混燃烧的平均火焰位置和火焰厚度,计算结果与实验结果吻合良好,这表明此方法能够较好计算出平均湍流火焰的主要特征。
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| 关 键 词： | 小火焰模型 预混火焰 贫燃 |
| 文章编号： | 0253-231X(2003)05-0873-04 |
| 修稿时间： | 2003年2月26日 |
NUMERICAL STUDY ON FLAMELET MODEL IN LEAN PREMIXED FLAME |
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| HOU Ling-Yun YANG Cheng-Ren FU Wei-Biao.NUMERICAL STUDY ON FLAMELET MODEL IN LEAN PREMIXED FLAME[J].Journal of Engineering Thermophysics,2003,24(5):873-876. |
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| Authors: | HOU Ling-Yun YANG Cheng-Ren FU Wei-Biao |
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| Abstract: | Lean turbulent premixed flame stabilized by a bluff body and in a gas turbine combustor have been modeled using the laminar flamelet concept. The detailed species concentrations, temperature and density are calculated using a presumed probability density function (PDF) together with a laminar flamelet library, which is generated using a detailed chemical kinetic mechanism. It is shown that the mean flame position and calculated NOx emission index compare with experimental data. A good agreement indicates that the flamelet model approach is able to predict the major properties of the mean turbulent flame. |
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| Keywords: | namelet model premixed flame lean combustion |
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