| 扩散过滤燃烧的数值模拟研究 |
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| 引用本文： | 肖红侠,徐有宁,史俊瑞,李 楠. 扩散过滤燃烧的数值模拟研究[J]. 热能动力工程, 2017, 32(5): 76-80 |
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| 作者姓名： | 肖红侠 徐有宁 史俊瑞 李 楠 |
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| 作者单位： | 沈阳工程学院 辽宁省洁净燃烧发电与供热技术重点实验室,沈阳工程学院 辽宁省洁净燃烧发电与供热技术重点实验室,沈阳工程学院 辽宁省洁净燃烧发电与供热技术重点实验室,沈阳工程学院 辽宁省洁净燃烧发电与供热技术重点实验室 |
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| 基金项目： | 国家自然科学基金（51476105,51406123） |
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| 摘 要： | 通过二维双温模型,使用甲烷详细的化学反应机理,设计了甲烷与氧气扩散燃烧器模型,并与实验值进行对比验证了其有效性。分析了小球直径,燃料质量分数等对火焰高度的影响。结果表明:火焰高度随着入口流速和甲烷质量分数的增大而增大;随着小球直径、固体导热系数、分子扩散系数和质量弥散系数的增大而减小。与预混气体过滤燃烧相比,扩散过滤燃烧的反应区域的气体和固体的温度分布是不同的,二者之间的最大温差达到188 K。
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| 关 键 词： | 扩散燃烧；数值模拟；火焰高度；弥散 |
Numerical Simulation Study on Diffusion Filtration Combustion |
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| XIAO Hong-xi,XU You-ning,SHI Jun-rui and LI Nan. Numerical Simulation Study on Diffusion Filtration Combustion[J]. Journal of Engineering for Thermal Energy and Power, 2017, 32(5): 76-80 |
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| Authors: | XIAO Hong-xi XU You-ning SHI Jun-rui LI Nan |
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| Affiliation: | The Key Laboratory of Clean Combustion for Electric Generation and Heat Supply Technology Liaoning Province, Shenyang Institute of Engineering,The Key Laboratory of Clean Combustion for Electric Generation and Heat Supply Technology Liaoning Province, Shenyang Institute of Engineering,The Key Laboratory of Clean Combustion for Electric Generation and Heat Supply Technology Liaoning Province, Shenyang Institute of Engineering and The Key Laboratory of Clean Combustion for Electric Generation and Heat Supply Technology Liaoning Province, Shenyang Institute of Engineering |
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| Abstract: | A numerical study of the diffusion filtration combustor was conducted with detailed chemistry mechanism and two-dimensional, two-temperature model. The model was validated with available experimental data. The influences of particle diameter, fuel mass fraction and dispersion on the flame height were analyzed. Simulation results showed that the flame height increases with inlet velocity and mass fraction of fuel, and decreases with the decrease in the particle diameter, solid thermal conductivity, effective molecular diffusion coefficient and mass dispersion coefficient. |
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| Keywords: | diffusion combustion numerical simulation flame height dispersion |
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