| 燃料环缝进口的丙烷-空气旋流扩散燃烧的LES-EBU和RANS-SOM模拟的比较 |
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| 引用本文： | 王文丽,周力行,李荣先.燃料环缝进口的丙烷-空气旋流扩散燃烧的LES-EBU和RANS-SOM模拟的比较[J].化工学报,2006,57(10):2278-2282. |
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| 作者姓名： | 王文丽 周力行 李荣先 |
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| 作者单位： | 清华大学航天航空学院， 北京 100084 |
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| 基金项目： | 面向21世纪教育振兴行动计划(985计划) |
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| 摘 要： | 用Smagorinsky-Lilly亚网格尺度湍流模型和EBU亚网格尺度湍流燃烧模型，对燃料环缝进口的丙烷-空气旋流湍流燃烧进行了大涡模拟（LES），并且用二阶矩（SOM）统观湍流燃烧模型进行了RANS模拟，将模拟所得统计平均的热态三个方向速度，湍流度，温度，丙烷、氧和CO2浓度分布和详细的实验数据对比.结果表明，LES-EBU大涡模拟的统计结果不如RANS-SOM模拟结果.因此，EBU亚网格尺度湍流燃烧模型有待改进.RANS-SOM模型可以进一步在预报工程中的旋流扩散燃烧中应用.
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| 关 键 词： | 旋流燃烧 大涡模拟 二阶矩模型 |
| 文章编号： | 0438-1157（2006）10-2278-05 |
| 收稿时间： | 09 20 2005 12:00AM |
| 修稿时间： | 2005-09-202005-12-13 |
Comparison between LES-EBU and RANS-SOM modeling of propane-air swirling diffusion combustion with annular fuel inlet |
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| WANG Wenli,ZHOU Lixing,LI Rongxian.Comparison between LES-EBU and RANS-SOM modeling of propane-air swirling diffusion combustion with annular fuel inlet[J].Journal of Chemical Industry and Engineering(China),2006,57(10):2278-2282. |
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| Authors: | WANG Wenli ZHOU Lixing LI Rongxian |
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| Affiliation: | School of Aerospace Engineering, Tsinghua University, Beijing 100084, China |
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| Abstract: | Simulation of propane-air swirling diffusion combustion was carried out by large-eddy simulation (LES) using the Smagorinsky-Lilly SGS turbulence model and the EBU SGS combustion model, and by RANS modeling using the second-order moment (SOM) combustion model.The simulation results were compared with detailed experimental results for three components of statistically averaged and fluctuation velocities, temperature, propane, oxygen and CO_2 concentration distributions.The results indicate that the RANS-SOM results are better than the LES-EBU results.Hence the EBU SGS combustion model needs to be improved and the SOM combustion model can be further used to predict engineering swirling combustion. |
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| Keywords: | swirling combustion large-eddy simulation second-order moment model |
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