| 大型切向燃烧炉二次风反切的模型及其数值研究 |
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| 引用本文： | 李彦鹏,张强,顾璠,徐益谦.大型切向燃烧炉二次风反切的模型及其数值研究[J].东南大学学报,2000,16(2):87-94. |
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| 作者姓名： | 李彦鹏 张强 顾璠 徐益谦 |
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| 作者单位： | 东南大学热能工程研究所!南京210096 |
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| 基金项目： | TheprojectsupportedbytheSpecialFundforMajorStateBasicResearchProjects! (G19990 2 2 2 0 9) |
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| 摘 要： | 提出并采用空度方法和修正的非均分QUICK格式对盘山 60 0MW切向燃烧锅炉在不同二次风反切工况下的炉内流场进行了数值模拟 ,并将计算结果与冷模试验进行了比较 .通过详细研究炉内速度场、燃烧器区压力场、实际切圆直径、气流角动量流率和水平烟道速度分布指数等参数 ,比较了不同二次风反切工况对烟气偏差的影响效果 .最后提出了合理的反切方式 .
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| 关 键 词： | 切向燃烧炉 烟气偏差 二次风反切 数值模拟 |
Modeling and Simulation Study on Reverse Swirl of Secondary Air in Large Tangentially Fired Boiler |
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| Li Yanpeng,Zhang Qiang,GU Fan,XU Yiqian.Modeling and Simulation Study on Reverse Swirl of Secondary Air in Large Tangentially Fired Boiler[J].Journal of Southeast University(English Edition),2000,16(2):87-94. |
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| Authors: | Li Yanpeng Zhang Qiang GU Fan XU Yiqian |
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| Abstract: | Based on the porosity method and the improved non uniform QUICK scheme, this paper describes a three dimensional computer simulation to predict the flow characteristics in a tangentially fired boiler. The model is applied to a 600?MW boiler modeling under different operating conditions of reverse swirl of secondary air. The numerical results achieve reasonable agreement with experimental data. The calculated results of flow field, the pressure distribution, the relative diameter of tangential circle, angular momentum flux in furnace and the velocity distribution index in horizontal gas pass are analyzed in detail. And then the effects of the reverse swirl of secondary air on flue gas imbalance are discussed. Finally a reasonable operating condition of the reverse swirl of secondary air is presented. |
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| Keywords: | tangentially fired boiler flue gas imbalance reverse swirl of secondary air numerical simulation |
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