Nucleate boiling is an important part of the pool boiling phenomenon which occurs in various processes involving heat transfer, such as, steam production, chemical processes, etc. The inclination of the heated surface, where bubbles nucleates, significantly affects the bubble growth dynamics as well as the heat transfer rate from the microlayer underneath the bubble during the nucleate boiling. In this study, the effect of the surface inclination on the bubble growth and detachment during the nucleate boiling is investigated numerically. For this purpose, the proposed model of Lay and Dhir for the microlayer is modified to include the effect of the inclination of the heated surface. The resulting equations are solved numerically, and the effect of varying the inclination of the heated surface on the bubble growth and heat transfer is investigated. The results show that the largest bubble size and the highest heat transfer from the heated surface occur when the inclination of the heated surface is 30°; while, the smallest bubble size and the lowest heat transfer from the heated surface are observed for the horizontal surface. Furthermore, the total heat transfer from the inclined surface during the bubble growth increases up to 32% compared to that for the horizontal surface.

核沸腾是池沸腾现象的重要组成部分，这种现象在涉及传热的各种过程中发生，例如蒸汽产生，化学过程等。气泡成核的受热表面的倾斜度也会显着影响气泡的生长动力学。在成核沸腾过程中，气泡下方微层的传热速率。在这项研究中，数值研究了在核沸腾过程中表面倾角对气泡生长和脱离的影响。为此，对微层的Lay和Dhir提出的模型进行了修改，以包括加热表面倾斜的影响。对所得方程进行数值求解，并研究了改变加热表面的倾斜度对气泡生长和传热的影响。结果表明，当被加热表面的倾角为30°时，气泡最大，并且从被加热表面的传热最高。同时，对于水平面，观察到最小的气泡尺寸和从受热面传出的热量最少。此外，与水平表面相比，在气泡生长过程中从倾斜表面传出的总热量增加高达32％。