| 单角煤粉燃烧炉中煤粉着火与稳燃的数学模型 |
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| 引用本文： | 郑远平,史学锋,马晓茜,钱壬章.单角煤粉燃烧炉中煤粉着火与稳燃的数学模型[J].华中科技大学学报(自然科学版),1994(Z1). |
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| 作者姓名： | 郑远平 史学锋 马晓茜 钱壬章 |
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| 作者单位： | 南油港湾大道妈湾电厂有限公司 |
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| 摘 要： | 将煤粉空气两相流在着火前和着火期间基本上仍遵从的射流发展规律作为模型基础，考虑了煤粉颗粒与气相间的速度滑移与温度滑移。气相场按射流规律发展井计及颗粒群对气相温度、速度、浓度变化的影响；颗粒群则按Ｌａｇｒａｎｇｅ处理方法追踪颗粒变化史。模型首次采用了挥发分与环境氧气匹配达着火限方能产生挥发分火焰的概念并取得了与实验现象一致的计算结果。
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| 关 键 词： | 煤粉，燃烧，数学模型，两相流，Lagrange方法 |
A Mathematical Model for the Ignition Regularity and Flame Stability of Pulverized Coal in a Single Pulverized Coal Furnace |
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| Zheng YuanpingDept. of Power Eng.,H. U. S. T,Wuhan ,China.
, Shi Xuefeng, Ma Xiaoqian , Qian Renzhang.A Mathematical Model for the Ignition Regularity and Flame Stability of Pulverized Coal in a Single Pulverized Coal Furnace[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,1994(Z1). |
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| Authors: | Zheng YuanpingDept of Power Eng H U S T Wuhan China Shi Xuefeng Ma Xiaoqian Qian Renzhang |
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| Affiliation: | Zheng YuanpingDept. of Power Eng.,H. U. S. T,Wuhan 430074,China).
, Shi Xuefeng, Ma Xiaoqian , Qian Renzhang |
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| Abstract: | A mathematical model for the two-phase flow of pulverized coal and air in a single pul-verized coal furnace is presented. The jet flow model is taken as the akphase and the La-grange's method is used to deal with the coal particle phase. The influerice of the particlephase on the air temperature, velocity and the variation of concentration are discussed. Theconcept that the volatile flame can be produced only when the matching of volatile matterwith oxygen in ambient air has reached the ignition point is adopted in the model developed. The agreement between the prediction and the data of experiments is satisfactory. |
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| Keywords: | pulverized coal combustion mathematical model two phase Lagrange's method |
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