双模态过渡池沸腾实验研究

利用控制加热电压和加热面平均温度两种方法，实验研究了常压（0．1MPa）、室温（16℃）条件下除气后的R113在直径60μm细铂丝表面的池沸腾传热现象，观测了单相对流、核态沸腾、双模态过渡沸腾和膜态沸腾4种传热模式中的汽相分布及其传热特征，发现充分发展的核态沸腾传热曲线、膜态沸腾传热曲线及临界热流的数值分别与文献中常用关联式的预测一致，而核态沸腾和膜态沸腾共存的稳定双模态过渡沸腾曲线被一极小值点分为两个连续分支，邻近膜态沸腾的右支上热流与过热度成正比，而邻近核态沸腾的左支上热流则随过热度增长而下降，并且只出现在加热面平均温度受控的实验中

Experimental Study on Two-mode Transitional Pool Boiling

利用控制加热电压和加热面平均温度两种方法，实验研究了常压（0．1MPa）、室温（16℃）条件下除气后的R113在直径60μm细铂丝表面的池沸腾传热现象，观测了单相对流、核态沸腾、双模态过渡沸腾和膜态沸腾4种传热模式中的汽相分布及其传热特征，发现充分发展的核态沸腾传热曲线、膜态沸腾传热曲线及临界热流的数值分别与文献中常用关联式的预测一致，而核态沸腾和膜态沸腾共存的稳定双模态过渡沸腾曲线被一极小值点分为两个连续分支，邻近膜态沸腾的右支上热流与过热度成正比，而邻近核态沸腾的左支上热流则随过热度增长而下降，并且只出现在加热面平均温度受控的实验中

Determination of the number of ψ(3686) events taken at BESIII

The number of ψ(3686) events collected by the BESIII detector during the 2021 run period is determined to be (2259.3±11.1)×106 by counting inclusive ψ(3686) hadronic events. The uncertainty is systematic and the statistical uncertainty is negligible. Meanwhile, the numbers of ψ(3686) events collected during the 2009 and 2012 run periods are updated to be (107.7±0.6)×106 and (345.4±2.6)×106, respectively. Both numbers are consistent with the previous measurements within one standard deviation. The total number of ψ(3686) events in the three data samples is (2712.4±14.3)×10^