Abstract Solid particles can adhere to fluid interfaces, modifying interfacial properties such as the surface tension and the surface elasticity. We here describe a new simulation method, the Fast Interface Particle Interaction (FIPI) method, capable of simulating on commodity hardware up to 100 k particles interacting with fluid interfaces of complex morphology. The method is based on resolving interfacial and hydrodynamic length scales larger than the particle, and model particle-level phenomena with physically consistent algebraic models. For its ability to simulate large numbers of potentially very small particles, FIPI represents a useful tool for investigating phenomena of particle adsorption/desorption and particle-induced surface tension modification in problems of froth flotation, drop/foam stabilisation, Bijelformation and other multiphase systems. Program summary Program Title: FIPI Licensing provisions: GPLv2 Programming language: C++ Nature of problem: Simulation of particle-laden fluid interfaces (3-phase flows) Solution method: Spectral method Running time: Up to dozens of hours on a single processor

中文翻译：

---

FIPI：一种用于模拟载有颗粒的流体界面的快速数值方法

摘要 固体颗粒可以粘附在流体界面上，改变界面特性，如表面张力和表面弹性。我们在这里描述了一种新的模拟方法，即快速界面粒子相互作用 (FIPI) 方法，能够在商品硬件上模拟多达 10 万个粒子与复杂形态的流体界面相互作用。该方法基于解析大于粒子的界面和流体动力学长度尺度，并使用物理一致的代数模型对粒子级现象进行建模。由于能够模拟大量可能非常小的颗粒，FIPI 代表了一种有用的工具，可用于研究泡沫浮选、液滴/泡沫稳定等问题中的颗粒吸附/解吸和颗粒诱导的表面张力改性现象，Bijelformation 和其他多相系统。程序摘要 程序名称：FIPI 许可条款：GPLv2 编程语言：C++ 问题性质：模拟载有粒子的流体界面（三相流） 解决方法：光谱法 运行时间：单个处理器上长达数十小时