In this study, the two-phase pressure drop of a one-side heated swirl tube (twist ratio=3, 5) was experimentally studied. If the a heat flux is gradually increased, the vapor blocks the flow path, thus leading to an increase in the differential pressure. As the inset sub-cooling and mass flow rate increase, the vapor is removed by condensation more rapidly, and thus, the rate of increase of differential pressure is reduced. From the evaluation of the prediction performance of the existing two-phase pressure drop correlations, it was found that the mean error rates of all correlations exceeded 50%. This is because most of the existing correlations were not developed based on the microchannel, but they were not focused on the swirl tube. Therefore, the authors developed a new two-phase pressure drop multiplier correlation for a one-side heated swirl tube that reflects the effect of the twist tape by modifying the Manglick single-phase swirl tube pressure drop correlation using the AI regression method.

在本研究中，实验研究了单侧加热涡流管（扭比=3、5）的两相压降。如果热通量逐渐增加，蒸汽会阻塞流路，从而导致压差增加。随着嵌入式过冷度和质量流量的增加，蒸汽通过冷凝更快地去除，因此压差增加的速度降低。从现有两相压降关联式的预测性能评估中发现，所有关联式的平均误差率均超过50%。这是因为现有的大多数相关性不是基于微通道开发的，而是没有集中在涡流管上。所以，