| 添加剂湍流减阻流动的传热特性数值计算 |
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| 引用本文： | 李昌烽,许世铎,冯晓东,王迎慧.添加剂湍流减阻流动的传热特性数值计算[J].排灌机械,2009,27(3):196-199. |
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| 作者姓名： | 李昌烽 许世铎 冯晓东 王迎慧 |
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| 作者单位： | 江苏大学,能源与动力工程学院,江苏,镇江,212013 |
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| 基金项目： | 国家自然科学基金，教育部留学回国人员科研启动基金 |
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| 摘 要： | 采用雷诺应力模型和Cross粘度方程,对二维轴对称圆管内湍流流动的聚丙烯酰胺稀溶液（PAM）的流场和温度场进行了数值模拟.在数值计算结果的基础上,系统研究了流速对减阻流体的减阻性能和传热特性的影响.结果表明,减阻流体的减阻率和传热降低率随流速的增大逐渐增大到渐进值,而且传热降低率恒大于减阻率.减阻流体柯尔本（Colburn）因子与摩擦系数的对比结果表明柯尔本比拟,特别是在较低流动雷诺数下有较大偏差.
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| 关 键 词： | 湍流 添加剂 减阻 传热降低 耦合 |
Numerical simulation on heat transfer characteristics for turbulent drag-reducing flow with additives |
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| Li Changfeng,Xu Shiduo,Feng Xiaodong,Wang Yinghui.Numerical simulation on heat transfer characteristics for turbulent drag-reducing flow with additives[J].Drainage and Irrigation Machinery,2009,27(3):196-199. |
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| Authors: | Li Changfeng Xu Shiduo Feng Xiaodong Wang Yinghui |
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| Institution: | School of Energy and Power Engineering;Jiangsu University;Zhenjiang;Jiangsu 212013;China |
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| Abstract: | The reynolds stress model and the Cross viscosity equation have been adopted to simulate the turbulent flow and temperature fields of the dilute polyacrylamide(PAM) solution in a two-dimensional axisymmetric circular tube.The effect of flow velocity on drag reduction and heat transfer performance of drag-reducing fluid have been investigated systematically.The results indicate that the drag reduction(DR) and heat transfer reduction(HTR) of drag-reducing fluid increase with increasing flow velocity and appro... |
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| Keywords: | turbulent flow additive drag reduction heat transfer reduction coupling |
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