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Numerical simulations of particle-laden jet/spout flows using Eulerian-Lagrangian approach

机译：使用Eulerian-Lagrangian方法进行粒子升降喷射/喷口流动的数值模拟

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Discrete Element Method (DEM) had been successfully coupled with Computational Fluid Dynamics (CFD) in the framework of OpenFOAM; an open source CFD simulation code. It is used to simulate particle laden flows using Eulerian approach for continuum phase and Lagrangian approach for solid phase. This numerical model is validated with simple test cases of spherical particle comparing the results with the analytical solution and is reported in earlier work. In current study, results of numerical simulation of spout-fluid bed are compared against experimental and simulation results reported in literature. The pressure drop fluctuations and isosurface plots of solid volume fraction show a good qualitative prediction of different flow regimes. The particle velocity profiles in the vertical direction for different test cases are plotted and compared with the literature data. The comparison of results shows a good quantitative behavior of the model predictions.
机译：离散元素法（DEM）已成功耦合OpenFoam框架中的计算流体动力学（CFD）;开源CFD仿真代码。它用于模拟利用欧拉阶段的粒子升降，用于固相和拉格朗日方法的欧拉方法。该数值模型用简单的球面粒子测试案例进行了验证，将结果与分析解决方案进行比较，并在早期的工作中报告。在目前的研究中，比较了对斑流体床的数值模拟的结果与文献报告的实验和仿真结果进行了比较。固体体积分数的压降波动和异位表面曲线呈现出不同流动制度的良好定性预测。绘制不同测试用例的垂直方向上的颗粒速度分布并与文献数据进行比较。结果的比较显示了模型预测的良好定量行为。

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