Melting Heat Transfer Characteristics of a Horizontal Ice Cylinder Immersed in Immiscible Liquid.
Melting Heat Transfer Characteristics of a Horizontal Ice Cylinder Immersed in Immiscible Liquid.
复制标题
浸入不混溶液体中的水平冰筒的熔化传热特性。
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
E. Mettawee
中科院分区：
文献类型：
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作者：
M. Yamada;S. Fukusako;T. Ogawa;E. Mettawee
对水平冰柱在不混溶液体中的融化特性进行了实验和分析研究。在水平冷却管周围形成一层透明的圆柱形冰层，作为冰与外管之间的环空中的不混溶液体在油中融化。在不同的外壁温度条件下，观察了冰的融化行为和不混溶液体的流动形态。在分析中，对熔融水膜和环境液体都引入了几个边界层。分别进行了分析。实验发现，在Ra=105时，平均Nusselt数的变化趋势明显，对应的温度条件为T0=12.0°C。本文的分析可以用来估算该体系在低温条件下的初期熔化特性。
Melting characteristics of a horizontal ice cylinder immersed within immiscible liquid have been investigated both experimentally and analytically. A clear cylindrical ice layer formed around the horizontal cooling tube with coaxial outer heated tube was melt in the oil as a testing immiscible liquid in the annulus between ice and outer tube. Both the melting behavior of ice and flow pattern of immiscible liquid were observed under a variety of outer wall temperature conditions. In the analysis, a couple of boundary layers were introduced for both melt water film and ambient liquid. respectively. It was found from the experiment that the tendency of mean Nusselt number changes obviously at Ra=105 which corresponds to the temperature condition T0=12.0°C. The present analysis might be utilized to estimate the melting characteristics of such a system for initial stage of low temperature conditions.