论文标题
自适应空间分辨率（SPH-ASR）的平滑粒子流体动力学的自由表面流量
Smoothed particle hydrodynamics with adaptive spatial resolution (SPH-ASR) for free surface flows
论文作者
论文摘要
开发了一种基于具有自适应空间分辨率（SPH-ASR）的平滑粒子流体动力学的数值方法，用于模拟自由表面流。此方法可以减少计算需求，同时保持数值准确性。在这种方法中，空间分辨率根据数值粒子的分裂和合并而根据与自由表面的距离自适应变化。当颗粒靠近自由表面时，颗粒被分成精炼，而当它们远离自由表面时将它们合并以使其变得粗糙。实现了一种搜索算法来识别自由表面的颗粒。引入了一种考虑可变平滑长度的粒子转移技术，以改善粒子分布。通过模拟各种自由表面流来验证提出的SPH-ASR方法，并将结果与使用具有均匀空间分辨率（USR）和实验数据的SPH获得的结果进行了比较。
A numerical method based on smoothed particle hydrodynamics with adaptive spatial resolution (SPH-ASR) was developed for simulating free surface flows. This method can reduce the computational demands while maintaining the numerical accuracy. In this method, the spatial resolution changes adaptively according to the distance to the free surface by numerical particle splitting and merging. The particles are split for refinement when they are near the free surface, while they are merged for coarsening when they are away from the free surface. A search algorithm was implemented for identifying the particles at the free surface. A particle shifting technique, considering variable smoothing length, was introduced to improve the particle distribution. The presented SPH-ASR method was validated by simulating various free surface flows, and the results were compared to those obtained using SPH with uniform spatial resolution (USR) and experimental data.
