Abstract This paper applied the Particle Method on the coupled simulation of phase change process and thermal fluid flow. An enthalpy-based heat and mass transfer model was approximated by SPH discretization, and the temperature and liquid fraction evaluation during phase change can then be calculated. Besides, a particle shifting was adopted to decrease the particle irregularity on thermal flow. To verify the capability of proposed model, two benchmarks without fluid flow were first presented: 1D Stefan Problem with constant temperature or specific heat flux on the boundary and 2D solidification example. The interface evaluation and temperature distribution by proposed method agreed well with the analytical solution. After the validation of proposed model on thermal flow, phase change process coupled with natural convection in square cavity was then simulated and consistent results were obtained compared with previous work.

中文翻译：

---

粒子法耦合固液相变与热流模拟

摘要 本文将粒子法应用于相变过程与热流体流动的耦合模拟。通过 SPH 离散化近似基于焓的传热和传质模型，然后可以计算相变期间的温度和液体分数评估。此外，采用粒子移动来减少热流上的粒子不规则性。为了验证所提出模型的能力，首先提出了两个没有流体流动的基准：边界上具有恒定温度或比热通量的 1D Stefan 问题和 2D 凝固示例。所提方法的界面评价和温度分布与解析解吻合较好。在对所提出的热流模型进行验证后，