| 圆环腔内有相变非稳态传热的数值分析 |
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| 引用本文： | 张文群,陈林根,张振山. 圆环腔内有相变非稳态传热的数值分析[J]. 锅炉技术, 2003, 34(4): 30-34 |
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| 作者姓名： | 张文群 陈林根 张振山 |
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| 作者单位： | 1. 海军工程大学503室,湖北,武汉,430033
2. 海军工程大学306室,湖北,武汉,430033 |
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| 摘 要： | 卧式螺旋管锅炉反应器是一种内装固态锂的圆环形容器 ,点火药埋置于固态锂中 ,点火后发出的大量热量使固态锂升温熔化。采用焓法模型 ,考虑变物性、有散热损失的情况 ,建立了此问题的三维有相变非稳态传热的控制方程组 ,用有限差分法离散化方程组 ,确定了锅炉内锂的瞬态温度场分布及熔化波阵面推进情况。
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| 关 键 词： | 传热 相变 焓法 有限差分法 |
| 文章编号： | CN31-1508(2003)04-0030-05 |
| 修稿时间： | 2002-05-30 |
Numerical Analysis of Non-steady Heat Transfer Problem with Phase Change in an Annular Cavity |
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| ZHANG Wen qun ,CHEN Lin gen ,ZHANG Zhen shan. Numerical Analysis of Non-steady Heat Transfer Problem with Phase Change in an Annular Cavity[J]. Boiler Technology, 2003, 34(4): 30-34 |
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| Authors: | ZHANG Wen qun CHEN Lin gen ZHANG Zhen shan |
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| Affiliation: | ZHANG Wen qun 1,CHEN Lin gen 2,ZHANG Zhen shan 1 |
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| Abstract: | Helical coiled boiler reactor is an annular cavity that is full of solid lithium. The fuse powder is embedded in the lithium. After the powder is ignited, the temperature of the lithium is increased for large quantity of heat, and the lithium is gradually melted. To take into account the varied property of the matter and the heat loss, the governing equations of this three dimensional nonsteady heat transfer problem with phase change were constructed by use of the enthalpy method in this paper. The equations were discretized by the finite difference method. Therefore, the distributing of the temperature in the cavity and the melt front at different time were obtained. |
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| Keywords: | heat transfer phase change enthalpy method finite difference method |
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