| 混合颗粒流分形模型及相关有效热传导的分析 |
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| 引用本文： | 张端明,雷雅洁,张美军,李智华.混合颗粒流分形模型及相关有效热传导的分析[J].华中科技大学学报(自然科学版),2001,29(12):114-116. |
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| 作者姓名： | 张端明 雷雅洁 张美军 李智华 |
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| 作者单位： | 华中科技大学物理系 |
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| 摘 要： | 将适用于两体混合颗粒径的能量均分定量推广到非均匀的复杂混合颗粒流系统。根据混合颗粒流具有的分形特征，推导出颗粒流中颗粒的分形速度分布函数，并建立混合颗粒流有效热传导的分形模型。由此导出质量连续分布的复杂混合颗粒流的有效热传导系数，讨论颗粒流分形结构对于其输运过程有效热传导系数的影响。
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| 关 键 词： | 混合颗粒流 有效热传导系数 分形维数 分形速度分布函数 能量均分定量 分形模型 |
| 文章编号： | 1000-8616(2001)12-0114-03 |
| 修稿时间： | 2001年3月16日 |
The Fractal Model of the Effective Thermal Conductivity in Granular Flow with Non-uniform Particles |
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| Zhang Duanming Lei Yiajie Zhang Meijun Li Zhihua Prof., Dept. of Physics,HUST,Wuhan ,China..The Fractal Model of the Effective Thermal Conductivity in Granular Flow with Non-uniform Particles[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,2001,29(12):114-116. |
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| Authors: | Zhang Duanming Lei Yiajie Zhang Meijun Li Zhihua Prof Dept of Physics HUST Wuhan China |
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| Institution: | Zhang Duanming Lei Yiajie Zhang Meijun Li Zhihua Prof., Dept. of Physics,HUST,Wuhan 430074,China. |
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| Abstract: | The equipartition of energy applied to binary mixture of granular flow is extended to granular flow with non uniform particles. Based on the fractal characteristic of granular flow with non uniform particles, the distribution function for fractal velocity and the fractal model for effective thermal conductivity are derived. The coefficient of effective thermal conductivity is accumulated. Thermal conduction derived from motions of particles in the granular flow and the effect of fractal dimension on effective thermal conductivity are discussed. |
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| Keywords: | coefficient of effective thermal conductivity size fractal dimension surface fractal dimension fractal velocity distribution function |
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