| 循环流化床底部区域流动特性的数值模拟 |
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| 引用本文： | 郭贞,郭庆杰,刘宝勇,刘会娥.循环流化床底部区域流动特性的数值模拟[J].中国粉体技术,2008,14(6). |
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| 作者姓名： | 郭贞 郭庆杰 刘宝勇 刘会娥 |
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| 作者单位： | 1. 中国石油大学(华东)化学化工学院,山东,东营,257061
2. 中国石油大学(华东)化学化工学院,山东,东营,257061;青岛科技大学化工学院,山东,青岛,266042 |
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| 基金项目： | 教育部科学技术重点项目
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山东省科技攻关重点项目
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| 摘 要： | 基于欧拉两相流模型计算循环流化床底部区域的流动特性。在低气速(1.0～2.5m/s)、低循环量下(5.2～34.5kg/(m2·s)),模拟时黏性采用层流模型取得了较好的效果。实验采用光导纤维探头测量仪测量流化床底部区域3个截面的局部颗粒浓度,模拟计算了循环流化床底部3个截面的颗粒浓度的径向分布,并同循环流化床装置的实验数据进行了对比。结果表明,数值模拟计算与实验结果相吻合。
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| 关 键 词： | 循环流化床 流动特性 数值模拟 |
Simulation of Flow Characteristics in Bottom Zone of a Circulating Fluidize Bed |
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| Guo Zhen,Guo Qingjie,Liu Baoyong,Liu Huie.Simulation of Flow Characteristics in Bottom Zone of a Circulating Fluidize Bed[J].China Powder Science and Technology,2008,14(6). |
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| Authors: | Guo Zhen Guo Qingjie Liu Baoyong Liu Huie |
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| Affiliation: | Guo Zhen1,Guo Qingjie1,2,Liu Baoyong1,Liu Huie1 (1.College of Chemistry , Chemical Engineering in China University of Petroleum,Dongying 257061,2. College of Chemical Engineering,Qingdao University of Science & Technology,Qingdao 266042,China) |
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| Abstract: | Euler two-phase model was used to compute the flow characteristics in the bed bottom of a circulating fluidized bed. At the low gas velocity(1.0～2.5 m/s) and the low solids mass flux(5.2～34.5 kg/(m2·s)), the laminar model was suitable for simulation local particle concentration. The local solid concentrations of three cross-sections at circulating fluidize bed bottom region were measured by an optical fiber probe. The predicted radial concentration distributions by numerical simulation were in agreement with the experiment data from a circulating fluidized bed. |
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| Keywords: | circulating fluidized bed flow characteristic numerical simulation |
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