| 水平管外蒸气轴向流动凝结传热理论与实验研究 |
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| 引用本文： | 刘晓华,李维仲,赵宗昌,沈自求. 水平管外蒸气轴向流动凝结传热理论与实验研究[J]. 大连理工大学学报, 2002, 42(2): 185-189 |
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| 作者姓名： | 刘晓华 李维仲 赵宗昌 沈自求 |
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| 作者单位： | 1. 大连理工大学,化学工程系,辽宁,大连,116012
2. 大连理工大学,动力工程系,辽宁,大连,116024 |
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| 摘 要： | 根据水平管外蒸气轴向流动速度随轴向距离的增加而逐渐减小的流动特性 ,建立了边界层外蒸气轴向流动速度方程 ,通过对数学模型的数值求解 ,得到了无量纲液膜厚度及凝结换热系数的数值解 ,同时得出了蒸气轴向流动速度随轴向坐标 z的变化关系 .并通过实验进行了验证 ,理论计算结果与实验结果吻合得较好 .通过数据整理得到了实验关联式 .
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| 关 键 词： | 凝结换热 数学模型/蒸气轴向流动 |
| 文章编号： | 1000-8608(2002)02-0185-05 |
| 修稿时间： | 2000-12-19 |
Study of theory and experimentation for condensation heat transfer of steam flowing axially outside horizontal tube |
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| LIU Xiao hua ,LI Wei zhong ,ZHAO Zong chang ,SHEN Zi qiu. Study of theory and experimentation for condensation heat transfer of steam flowing axially outside horizontal tube[J]. Journal of Dalian University of Technology, 2002, 42(2): 185-189 |
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| Authors: | LIU Xiao hua LI Wei zhong ZHAO Zong chang SHEN Zi qiu |
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| Affiliation: | LIU Xiao hua 1,LI Wei zhong 2,ZHAO Zong chang 1,SHEN Zi qiu 1 |
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| Abstract: | Based on the characteristics of the steam velocity along the tube decreasing with the axial distance, the steam velocity equation is achieved. The numerical solution of the dimensionless thickness of the condensation film and the condensation heat transfer coefficient are obtained. In the meantime, the relationship between the steam velocity along the tube and the axial distance is also achieved. The experimental data are compared with the numerical solution, and they agree well. |
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