Abstract The development and validation of 3D multiphase computational fluid dynamics (M-CFD) models and physics-informed data-driven modeling require data of high-quality and high-resolution. Considering the difficulties in acquiring the corresponding experimental data in prototypical conditions, two-phase boiling simulations by Interface Tracking Method (ITM) based models can be used to generate high-resolution numerical data in a consistent and relatively economical manner. A boiling model is developed in one of the ITM-based multiphase-flow solvers, named PHASTA, to investigate the nucleate boiling phenomenon. The interaction between bubbles forming at adjacent nucleation sites is investigated with this ITM boiling model. Nucleate pool boiling simulations with multiple nucleation sites are presented in this paper. Theinfluences of site distance, neighboring bubble size and contact angle effect are investigated. The presented boiling simulations are conducted on 3D unstructured computational meshes. These simulation results improve our understanding of the physical mechanisms of the nucleate boiling phenomenon and provide high-resolution numerical data for M-CFD validation and advanced boiling model development.

中文翻译：

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使用界面跟踪方法进行核沸腾模拟

摘要 3D 多相计算流体动力学 (M-CFD) 模型和基于物理的数据驱动建模的开发和验证需要高质量和高分辨率的数据。考虑到在原型条件下获取相应实验数据的困难，可以使用基于界面跟踪方法 (ITM) 的模型进行两相沸腾模拟，以一致且相对经济的方式生成高分辨率数值数据。沸腾模型是在其中一个基于 ITM 的多相流求解器中开发的，名为 PHASTA，以研究核沸腾现象。使用此 ITM 沸腾模型研究了在相邻成核位置形成的气泡之间的相互作用。本文介绍了具有多个成核位点的成核池沸腾模拟。研究了位点距离、相邻气泡尺寸和接触角效应的影响。所呈现的沸腾模拟是在 3D 非结构化计算网格上进行的。这些模拟结果提高了我们对核沸腾现象物理机制的理解，并为 M-CFD 验证和高级沸腾模型开发提供了高分辨率的数值数据。