| 流化床图像的分形维数与颗粒运动度的关系 |
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| 引用本文： | 罗娅,马增益,黄群星,朱建新,王飞,朱佳琪,严建华,倪明江.流化床图像的分形维数与颗粒运动度的关系[J].电站系统工程,2004,20(5):19-21,23. |
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| 作者姓名： | 罗娅 马增益 黄群星 朱建新 王飞 朱佳琪 严建华 倪明江 |
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| 作者单位： | 浙江大学;浙江大学;浙江大学;浙江大学;浙江大学;浙江大学;浙江大学;浙江大学 |
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| 基金项目： | 国家自然科学基金资助项目(N50106015)，国家重点基础研究专项经费资助项目(12001CBA09600) |
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| 摘 要： | 采用图像法,根据分形理论计算了流化床图像的分形维数,这一指标可用于评估流化床内颗粒运动度,分形维数大颗粒运动度也大,分形维数小颗粒运动度也小。当不改变其它操作条件时,增大操作气速分形维数也增大并且变化范围亦增大,单一的分形维数用于评价单一的颗粒运动度,一个工况内的分形维数的均值和偏差则用于评价该工况下流化床颗粒的运动度以及(\273\354\272\317)0(\307\351\277\366\241\243)]由于板式布风方式的阻力比管式布风方式小,该方式下的分形维数大。
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| 关 键 词： | 流化床 分形维数 颗粒运动度 图像法 |
| 文章编号： | 1005-006X(2004)05-0019-04 |
Analysis of the Relationship Between the Fractal Dimension of Fluidized Bed Images and Particle Movement Degree |
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| LUO Ya,MA Zeng-yi,HUANG Qun-xing,et al.Analysis of the Relationship Between the Fractal Dimension of Fluidized Bed Images and Particle Movement Degree[J].Power System Engineering,2004,20(5):19-21,23. |
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| Authors: | LUO Ya MA Zeng-yi HUANG Qun-xing |
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| Abstract: | An image process experimental system was developed with a high-speed CCD camera to calculate the fractal dimension of fluidized bed images based on fractal theory. Fractal dimension can be used to evaluate the particle movement degree in a fluidized bed. The more fractal dimension, the more the particle movement degree is. Without the other operating conditions changed, the more operating gas velocity, the more fractal dimension and the difference is. The fractal dimension in the perforated plate distributor mode is more than that of air pipe mode as less loss of resistance. |
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| Keywords: | fluidized beds fractal dimension particle movement degree image processing technique |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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