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本文对液态金属钠在环管热进口段部分的湍流传热做了实验研究.实验的主要特性参数如下:环形通道之直径比 d_2/d_1=1.54;热流密度 q=50W/cm~2;雷诺数Re=2×10~4～1.5×10~5;伯克利数 Pe=122～1078.分析表明,实验值与理论值吻合良好.最后,分别给出稳定段和热进口段的努谢尔特数以及热进口段长度的计算式.
In this paper, the experimental study on the turbulent heat transfer of liquid metallic sodium in the hot inlet section of the loop was carried out.The main characteristic parameters of the experiment are as follows: the diameter of the annular channel is d2 / d_1 = 1.54; the heat flux is q = 50W / cm ~ 2; The number Re = 2 × 10 ~ 4 ~ 1.5 × 10 ~ 5, the Berkeley number Pe = 122 ~ 1078. The analysis shows that the experimental values agree well with the theoretical ones.Finally, Number and the length of the hot inlet section of the formula.