A thermal-hydrodynamic coupling model is used to investigate the interplay between the wall temperature distribution and the bubble departure during the nucleate boiling process. The boiling process is modeled as the combination of three subprocesses: the transient heat conduction process in the solid heater, the evaporation of the microlayer underneath the bubble, and the bubble dynamics in the two-phase bulk fluid region. The moving bubble interface is captured by the volume of fluid method in the OpenFOAM framework. The proposed model is validated against the experimental results of the boiling process of the water on an Indium Tin Oxide heater. The predicted results agree well with related measurements in the literature. Following the validation, the effects of the boiling heat flux on the bubble departure period are examined. The results show that the bubble departure period decreases with the increase of the applied heat flux. High heat flux will cause irregularity in the departure periods for successive bubbles due to the influence of the wake flow evoked by the rising bubble. Furthermore, the influence of the bubble contact angle on the boiling heat-transfer performance is investigated. It is confirmed that the bubble departure diameter increases with the increase of the contact angle, meanwhile, the average wall temperature decreases with the increase of the contact angle.

热-流体动力学耦合模型用于研究成核沸腾过程中壁温分布与气泡离开之间的相互作用。沸腾过程被建模为三个子过程的组合：固体加热器中的瞬态热传导过程，气泡下面的微层的蒸发以及两相本体流体区域中的气泡动力学。运动气泡界面是通过OpenFOAM框架中的流体体积方法捕获的。相对于铟锡氧化物加热器上水的沸腾过程的实验结果验证了所提出的模型。预测结果与文献中的相关测量结果非常吻合。验证之后，检查沸腾热通量对气泡离开时间的影响。结果表明，气泡离开时间随施加的热通量的增加而减小。由于上升的气泡引起的尾流的影响，高的热通量将在连续气泡的离开周期中引起不规则性。此外，研究了气泡接触角对沸腾传热性能的影响。可以确定，气泡离开直径随着接触角的增加而增加，同时，平均壁温随接触角的增加而降低。研究了气泡接触角对沸腾传热性能的影响。可以确定，气泡离开直径随着接触角的增加而增加，同时，平均壁温随接触角的增加而降低。研究了气泡接触角对沸腾传热性能的影响。可以确定，气泡离开直径随着接触角的增加而增加，同时，平均壁温随接触角的增加而降低。