论文标题
Democritus：使用SDPD-DEM耦合模型模拟浆液流的开源框架
DEMocritus: an open source framework for simulating slurry flows using an SDPD-DEM coupled model
论文作者
论文摘要
本文提供了开源代码，可作为三维流体粒子相互作用系统基于粒子的模拟的粘度计，靶向化学工程中的浆液或悬架流。平滑的耗散粒子动力学（SDPD）是一种用于中尺度热力学流的流体粒子模型，与离散元素方法（DEM）的接触模型相结合。流体粒子相互作用的力学通过使用拖动模型的双向相互作用方案进行建模。我们通过几个验证测试来证明我们的仿真代码：在合理的计算时间内，反对脉流流，单粒子沉积物和包含刚性颗粒的大坝破坏问题的模拟。我们的新开源代码对计算物理学的科学家，研究人员和工程师有益。
This paper provides open-source code that works as a viscometer of particle-based simulations of three-dimensional fluid-particle interaction systems, targetting slurry or suspension flow in chemical engineering. The smoothed dissipative particle dynamics (SDPD), a fluid particle model developed for thermodynamic flow at mesoscale, is combined with the contact model of the discrete element method (DEM). The mechanics of fluid-particle interaction is modeled by a two-way interaction scheme using a drag-force model. We demonstrate our simulation code by several validation tests: simulations of reverse-Poiseuille flow, single-particle sedimentation, and a dam-breaking problem containing rigid particles, in reasonable calculation time. Our new open-source code is beneficial for scientists, researchers, and engineers in computational physics.
