| 湍流对多孔介质内预混火焰影响的初步研究 |
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| 引用本文： | 赵平辉,叶桃红,姜海,陈义良.湍流对多孔介质内预混火焰影响的初步研究[J].工程热物理学报,2008,29(11). |
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| 作者姓名： | 赵平辉 叶桃红 姜海 陈义良 |
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| 作者单位： | 中国科学技术大学热科学和能源工程系,安徽,合肥,230027 |
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| 基金项目： | 国家高技术研究发展计划(863计划)
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| 摘 要： | 当气流速度较大时,多孔介质内预混燃烧的模拟需要考虑湍流的影响,本文利用简化的k-ε双方程湍流反应流模型对多孔介质内的预混火焰进行了数值模拟.结果表明,湍流大大加强了气流的组分和能世扩散,计算得到的火焰传播速度、CO及NO的排放量都与实验值符合得比较好,与层流模型相比,湍流模型能够改善计算结果.
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| 关 键 词： | 多孔介质 湍流 预混火焰 火焰传播速度 |
AN INITIAL STUDY OF THE TURBULENT EFFECTS ON THE PREMIXED FLAME IN POROUS MEDIA |
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| ZHAO Ping-Hui,YE Tao-Hong,JIANG Hai,CHEN Yi-Liang.AN INITIAL STUDY OF THE TURBULENT EFFECTS ON THE PREMIXED FLAME IN POROUS MEDIA[J].Journal of Engineering Thermophysics,2008,29(11). |
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| Authors: | ZHAO Ping-Hui YE Tao-Hong JIANG Hai CHEN Yi-Liang |
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| Institution: | ZHAO Ping-Hui YE Tao-Hong JIANG Hai CHEN Yi-Liang School of Engineering,University of Science , Technology of China,Hefei 230027,China |
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| Abstract: | The simulation of the premixed combustion in porous media need consider the turbulent effects when the gas velocity becomes high. In this paper, a premixed flame was modeled using a simplified two-equation turbulent reacting fluid method. It was shown that the turbulence substantially strengthened the diffusions of the species and energy. Compared to the laminar model, the calculated results of the turbulent model such as flame propagation speed, CO and NO emissions agreed well with the experiment datum. So... |
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| Keywords: | porous media turbulence premixed flame flame propagation speed |
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