Direct Numerical Simulation of Dense Gas-Solid Two-Phase Flows
Direct Numerical Simulation of Dense Gas-Solid Two-Phase Flows
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DOI：
10.1002/apj.5500080303
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发表时间：
2008-05
期刊：
影响因子：
--
通讯作者：
Y. Zhulin
中科院分区：
文献类型：
--
作者：
Y. Zhulin
基于牛顿定律和经典物理定律，分别采用欧拉法和拉格朗日法来处理气体场和离散粒子。在每个时间步 Δt 中求解三维粘性空气场和三维离散粒子场。建立数学模型时考虑了单个颗粒之间的碰撞和摩擦，包括单个颗粒的直径、密度、刚度和摩擦系数。使用球磨机中的颗粒混合、从料斗中落下的颗粒以及在流化床中流化的颗粒作为模拟的示例。将选定的模拟结果与实验结果进行比较。
Based on Newton's law and the classical physical laws, Eulerian and Lagrangian methods are respectively used to deal with gas-field and discrete particles. The three-dimensional viscid air-field and three-dimensional discrete particle field are solved in each time step Δt. Collision and friction between individual particles are taken into account when establishing the mathematical models, including individual particle diameter, density, stiffness and friction coefficient. Particles mixing in ball mills, particles dropping from hoppers, and particles fluidizing in fluidized beds are used as examples of the simulations. Selected simulated results are compared to experimental results.