Abstract A Diffuse Interface Model (DIM) is employed to model droplet impact on a heated solid surface. The DIM uses an especially constructed solid wall boundary condition which enables simulations with different wetting conditions of the solid surface. The model is also extended to include the effects of surface roughness on the behavior of the contact line dynamics. Multiple simulations are carried out to demonstrate the capabilities of the presented model. The simulation results demonstrate the influence of the wetting properties of the solid, with a higher cooling rate for hydrophilic than for hydrophobic wetting conditions. Surface roughness of the solid surface increases the cooling rate of the solid by enhancing the heat transfer between solid and fluid.

中文翻译：

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用扩散界面模型模拟液滴对加热固体表面的影响

摘要 采用扩散界面模型 (DIM) 来模拟液滴对加热固体表面的影响。DIM 使用特别构造的固体壁边界条件，可以在固体表面的不同润湿条件下进行模拟。该模型还扩展到包括表面粗糙度对接触线动力学行为的影响。进行了多次模拟以证明所提出模型的能力。模拟结果证明了固体润湿性的影响，亲水性比疏水性润湿条件具有更高的冷却速率。固体表面的表面粗糙度通过增强固体和流体之间的热传递来提高固体的冷却速度。