Abstract The bubble dynamics and their effects on flow boiling heat transfer in a horizontal channel are investigated under constant wall temperature and constant wall heat flux conditions. It is found that both the bubble departure time and departure diameter decrease with increasing the inertial force for all the considered heating modes. Moreover, the bubble departs from the heater with a residual for the constant wall temperature condition so the heat transfer efficiency for the constant wall temperature condition depends mainly on the bubble growth rate and the vapor thickness. While for the constant heat flux condition, the bubble slides away from the heater accompany with waiting periods. So the heat transfer performance for this condition is mainly affected by the growth and waiting times. Besides, the results also show there were two contradictory trends of heat transfer efficiency under different wettabilities for the considered heat modes.

中文翻译：

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水平微通道中饱和流动沸腾传热的中尺度模拟

摘要 研究了等壁温、等壁热流条件下水平通道内气泡动力学及其对流动沸腾传热的影响。发现对于所有考虑的加热模式，气泡离开时间和离开直径都随着惯性力的增加而减小。此外，在等温条件下，气泡会带着残留物离开加热器，因此等温条件下的传热效率主要取决于气泡的生长速度和蒸汽厚度。而对于恒定的热通量条件，气泡会随着等待时间从加热器上滑落。因此，这种条件下的传热性能主要受生长和等待时间的影响。除了，