| 管内湍流传质（火用）损机理分析 |
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| 引用本文： | 陈清林,王松平,尹清华,华贲.管内湍流传质（火用）损机理分析[J].华南理工大学学报(自然科学版),2002,30(9). |
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| 作者姓名： | 陈清林 王松平 尹清华 华贲 |
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| 作者单位： | 1. 华南理工大学,传热强化与过程节能教育部重点实验室,广东,广州,510640
2. 青岛大学,物理系,山东,青岛,266071 |
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| 基金项目： | 国家重点基础研究发展规划项目
(G2 0 0 0 0 2 6 30 7)，国家自然科学基金资助项目(2 0 0 76 0 18)，广东省自然科学基金资助项目 (990 6 38) |
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| 摘 要： | 根据常温下充分发展湍流传递方程组 ,研究了壁面常质量流管内湍流传质损的机理 ,计算了由于粘性耗散、径向和轴向传质不可逆性引起的损率随流体的性质、雷诺数、边界条件数及空间位置的变化规律 .对单位长度总损率的计算表明 ,对给定的流体 ,单位长度总损率是传质单元几何参数、边界条件和雷诺数的多元函数 ,由此可通过损率最小化设计和优化传质过程与单元
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| 关 键 词： | 湍流 质量传递 损失 |
Mechanism Analysis of Exergy Destruction Due to Mass Transfer with Turbulent Flows Through a Duct |
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| Chen Qing_lin,Wang Song_ping,Yin Qing_hua,Hua Ben.Mechanism Analysis of Exergy Destruction Due to Mass Transfer with Turbulent Flows Through a Duct[J].Journal of South China University of Technology(Natural Science Edition),2002,30(9). |
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| Authors: | Chen Qing_lin Wang Song_ping Yin Qing_hua Hua Ben |
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| Institution: | Chen Qing_lin 1 Wang Song_ping 2 Yin Qing_hua 1 Hua Ben 1 |
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| Abstract: | The mechanism of exergy destruction due to mass transfer with turbulent flows through a tube has been investigated according to the equations set of the exergy transfer for fully developed turbulent flows. The distributions of exergy destruction rates varying with fluid properties,Reynolds number,boundary conditions and spatial location due to viscosity,mass transfer in radial and in axis directions have been calculated. The calculation shows that for a given fluid the total exergy destruction per unit length for a duct depends on geometrical parameters,boundary conditions and Reynolds number,and therefore the design and optimum of a mass transfer system can be performed by minimizing the exergy destruction in the system. |
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| Keywords: | turbulent flow mass transfer exergy destruction |
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