The Sonic Limit in Sodium Heat Pipes
The Sonic Limit in Sodium Heat Pipes
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DOI：
10.1115/1.3450029
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发表时间：
1973-05
影响因子：
--
通讯作者：
E. Levy;S. Chou
中科院分区：
文献类型：
--
作者：
E. Levy;S. Chou
本文描述了钠热管中蒸汽解离-复合和均匀蒸汽冷凝现象的分析研究结果。结果表明，解离-复合反应和蒸汽冷凝过程对声极限换热率的影响都不大。最重要的一个因素是热管蒸汽通道中的壁面剪切应力。摩擦效应控制了声点的位置，决定了冷凝器段内的流动是亚音速还是超音速，并将声极限换热率降低到比无粘分析预测的值低得多的值。
The results of an analytical study of the vapor dissociation–recombination and homogeneous vapor condensation phenomena in sodium heat pipes are described. It is shown that neither the dissociation–recombination reaction nor the vapor condensation process has a large influence on the sonic-limit heat transfer rate. The single most important factor is shown to be the wall shear stress in the heat-pipe vapor passage. The friction effects control the location of the sonic point, determine if the flow in the condenser section will be subsonic or supersonic, and decrease the sonic-limit heat transfer rate to values which can be substantially lower than those which are predicted from inviscid analyses.