| 气管吸入流中大气污染物沉积的数学模型 |
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| 引用本文： | 许国良,黄素逸,张宗勤.气管吸入流中大气污染物沉积的数学模型[J].华中科技大学学报(自然科学版),1998(10). |
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| 作者姓名： | 许国良 黄素逸 张宗勤 |
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| 作者单位： | 华中理工大学动力工程系(许国良，黄素逸)，美国罗德岛大学机械工程系(张宗勤) |
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| 基金项目： | 国家自然科学基金重大项目 |
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| 摘 要： | 基于气固两相混合物中粒子因随机的Ｂｒｏｗｎ扩散运动而呈现出随时间和空间位置变化的概率分布，提出有效粒子扩散表面的概念，由此建立人体气管吸入流中大气污染物在气管壁沉积的数学模型．模型计算结果与见诸报导的关于超细粒子的有关文献的分析结果进行了比较，符合较好．原则上，该方法适用于含有任何尺寸粒子的多相流动问题．
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| 关 键 词： | 多相流 大气污染 生物热物理 |
A Mathematical Model of Air Dust Depositing within the Human Respiratory System |
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| Xu Guoliang,Assoc. Prof. , Dept. of Power Eng.,HUST,Wuhan ,China. Huang Suyi,Zhang Zongqin.A Mathematical Model of Air Dust Depositing within the Human Respiratory System[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,1998(10). |
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| Authors: | Xu Guoliang Assoc Prof Dept of Power Eng HUST Wuhan China Huang Suyi Zhang Zongqin |
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| Institution: | Xu Guoliang,Assoc. Prof. , Dept. of Power Eng.,HUST,Wuhan 430074,China. Huang Suyi,Zhang Zongqin |
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| Abstract: | By analyzing the time-dependent probability distribution of air dust within human airways, the concept of an effective particle diffusion sphere is presented in which the effects of Brownian ran- dom diffusion are accounted. The mathematical modeling of the deposition efficiency of air dust within human respiratory system is proposed. The results agree very well with the available analytical solu- tions in case of ultra fine particles flowing within pipes with cylindrical and rectangular cross sectional geometry. This approach is uniformly applicable to multiphase flows of all particle sizes principally. |
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| Keywords: | multiphase flow air pollution bio-thermophysics |
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