PFEM-based modeling of industrial granular flows
PFEM-based modeling of industrial granular flows
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DOI：
10.1007/s40571-014-0004-9
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发表时间：
2014-05-01
影响因子：
3.3
通讯作者：
Haggblad, H. -A
中科院分区：
文献类型：
--
作者：
Cante, J.;Davalos, C.;Haggblad, H. -A
数值方法在解决和优化工业颗粒流问题方面的潜力已被该领域的工业界广泛接受，其挑战是如何有效地促进工业实践。在本文中，我们试图在这方面进行探索性的一步，使用的数值模型的基础上连续力学和所谓的粒子有限元法（PFEM）。这一目标是通过关注采矿业和球团制造业中的两个特定工业应用来实现的：筒仓排放和翻滚米尔斯中的功率消耗计算。这两个例子都代表了颗粒材料机械响应的变化-从停滞配置到流动条件的变化。筒仓排放验证使用的实验数据，在一个全尺寸平底圆筒筒仓收集。进行模拟的目的是表征和理解同心放电的流型和压力之间的相关性。在第二个例子中，PFEM作为一个数值工具来跟踪滚筒内的颗粒的位置的潜力进行了分析。研究了压力和壁面压力分布。还计算了功率消耗，并针对实验进行了验证，在实验中，功率根据滚筒的旋转速度绘制。
The potential of numerical methods for the solution and optimization of industrial granular flows problems is widely accepted by the industries of this field, the challenge being to promote effectively their industrial practice. In this paper, we attempt to make an exploratory step in this regard by using a numerical model based on continuous mechanics and on the so-called Particle Finite Element Method (PFEM). This goal is achieved by focusing two specific industrial applications in mining industry and pellet manufacturing: silo discharge and calculation of power draw in tumbling mills. Both examples are representative of variations on the granular material mechanical response-varying from a stagnant configuration to a flow condition. The silo discharge is validated using the experimental data, collected on a full-scale flat bottomed cylindrical silo. The simulation is conducted with the aim of characterizing and understanding the correlation between flow patterns and pressures for concentric discharges. In the second example, the potential of PFEM as a numerical tool to track the positions of the particles inside the drum is analyzed. Pressures and wall pressures distribution are also studied. The power draw is also computed and validated against experiments in which the power is plotted in terms of the rotational speed of the drum.