| 旋流燃烧NO生成的USM湍流反应模型 |
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| 引用本文： | 王方,周力行,张健. 旋流燃烧NO生成的USM湍流反应模型[J]. 工程热物理学报, 2003, 24(4): 691-694 |
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| 作者姓名： | 王方 周力行 张健 |
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| 作者单位： | 清华大学力学系,煤的清洁燃烧国家重点实验室,北京,100084 |
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| 基金项目： | 国家重点基础研究专项经费资助项目(No.G1999-0222-07) |
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| 摘 要： | 用统一二阶矩(USM)湍流反应模型对不同旋流数下甲烷-空气旋流燃烧NO生成进行了数值模拟,并和EBU-Arrhenius(E-A)燃烧模型对燃烧的模拟结果和简化PDF湍流反应模型对NO生成的模拟结果以及相应的实验结果进行对比。结果表明,USM模型显著地优于E-A模型和简化PDF模型。E-A模型不能合理地模拟有限反应动力学,而简化PDF模型用两个单变量PDF的乘积代替联合PDF,大大地低估了NO湍流反应率。USM模型预报结果和实验结果符合最好。
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| 关 键 词： | NO生成 湍流旋流燃烧 二阶矩模型 |
| 文章编号： | 0253-231X(2003)04-0691-04 |
| 修稿时间： | 2002-10-22 |
A UNIFIED SECOND-ORDER MOMENT TURBULENCE-CHEMISTRY MODEL OF NO FORMATION IN SWIRLING COMBUSTION |
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| WANG Fang ZHOU Li-Xing ZHANG Jian. A UNIFIED SECOND-ORDER MOMENT TURBULENCE-CHEMISTRY MODEL OF NO FORMATION IN SWIRLING COMBUSTION[J]. Journal of Engineering Thermophysics, 2003, 24(4): 691-694 |
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| Authors: | WANG Fang ZHOU Li-Xing ZHANG Jian |
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| Abstract: | A unified second-order moment (USM) turbulence-chemistry model is used to simulate NO formation in methane-air swirling combustion for different swirl numbers, and the simulation results are compared with those using the EBU-Arrhenius (E-A) combustion model and the simplified PDF turbulent reaction model of NO formation and the corresponding measurement results. The results indicate that the USM model is obviously better than the E-A model and the simplified PDF model. The E-A model cannot reasonably simulate the finite-rate kinetics, while the simplified PDF model, using a product of two single-variable PDF's instead of a joint PDF, seriously under-predicts the NO reaction rate. The USM model gives the best agreement with the experimental results. |
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| Keywords: | NO formation turbulent swirling combustion second-order moment model |
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