| 稠密气固流动中颗粒聚集的定量评价 |
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| 引用本文： | 刘敏,张会强,郭印诚,王希麟,林文漪.稠密气固流动中颗粒聚集的定量评价[J].工程热物理学报,2004,25(5):804-806. |
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| 作者姓名： | 刘敏 张会强 郭印诚 王希麟 林文漪 |
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| 作者单位： | 清华大学工程力学系,北京,100084;清华大学工程力学系,北京,100084;清华大学工程力学系,北京,100084;清华大学工程力学系,北京,100084;清华大学工程力学系,北京,100084 |
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| 基金项目： | 国家重点基础研究发展规划资助项目(No.62980532) |
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| 摘 要： | 本文提出了定量评价稠密两相流动中颗粒聚集现象的参数和方法:用碰撞频率的大小估计颗粒聚集的强弱;用颗粒体积分数的标准偏差评价流场中颗粒分布的不均匀程度;用颗粒分布的相关系数衡量流动的相似性;用颗粒体积分数的概率分布和颗粒分布曲线描述流场细节;用高密集区域颗粒数目比例和稀疏区域面积比例来反映流场的特征部分。
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| 关 键 词： | 定量评价 稠密气固流动 颗粒聚集 颗粒碰撞 |
| 文章编号： | 0253-231X(2004)05-0804-03 |
| 修稿时间： | 2003年12月16 |
QUANTITATIVE ASSESSMENT OF CLUSTER FORMATION IN DENSE GAS-SOLID FLOW |
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| LIU Min ZHANG Hui-Qiang GUO Yin-Cheng WANG Xi-Lin LIN Wen-Yi.QUANTITATIVE ASSESSMENT OF CLUSTER FORMATION IN DENSE GAS-SOLID FLOW[J].Journal of Engineering Thermophysics,2004,25(5):804-806. |
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| Authors: | LIU Min ZHANG Hui-Qiang GUO Yin-Cheng WANG Xi-Lin LIN Wen-Yi |
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| Abstract: | Parameters and methods used for quantitative assessment of cluster formation in dense gas-solid flow are summarized in this paper: collision frequency is used to estimate the extent of particle concentration; the standard deviation of particle volume fractions is used to assess the flow nonuni-formity; correlation coefficient of the cluster patterns is defined to quantify the flow comparability; distribution of particle numbers and frequency distributions of particle volume fraction are used for flow details; the proportion of particle numbers in dense regions and the proportion of areas in dilute regions are used for special flow parts. |
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| Keywords: | quantitative assessment dense gas-solid flow cluster formation inter-particle collision |
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