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不同粒子形状的不同粒子形状的流动力学在一个矩形筒子.
Muhammad Ahmed Hanif1, Devaraj van der Meer1
1University of Twente, Physics of Fluids Group, 7500AE Enschede, The Netherlands.
Physical review. E
|March 19, 2025
概括
颗粒的形状显著影响着仓库排放率,而较高的尺寸比则减少了流量. 马卡罗尼形状表现出最低的排放,而筒子宽度放大了形状依赖的流量差异.
科学领域:
- 颗粒物理 颗粒物理
- 材料科学 是一种材料科学.
- 化学工程是化学工程的组成部分.
背景情况:
- 了解颗粒物材料流对于工业过程至关重要.
- 粒子形状是影响散装材料行为的一个关键因素.
- Silo 的设计和运行在很大程度上取决于预测排放率.
研究的目的:
- 为了研究粒子形状对矩形筒子中的放电动态的影响.
- 分析筒子宽度和孔径大小对流速的影响.
- 检查与形状和筒仓几何学相关的粒子速度概况.
主要方法:
- 实验研究使用六种不同形状的等体积的粒子.
- 矩形筒仓具有可调宽和不同尺寸的平底孔.
- 分析放电速率和粒子速度概况.
主要成果:
- 排放速度随着形和形形状的粒子面积比增加而降低.
- 马卡罗尼形状的颗粒显示出最低的放电率.
- 筒子的宽度显著影响了形状之间的排放速率区分能力,特别是在较小的宽度.
- 在孔口附近的速度配置文件随着尺寸比例的增加而变窄.
- 在更高的高度, Silo 宽度会更明显地影响速度配置文件.
结论:
- 粒子形状是一个关键参数,它决定了来自堆的颗粒性排放.
- 筒子的几何形状,特别是宽度,调节了粒子形状对流量的影响.
- 结果为优化仓库设计和物料处理流程提供了洞察力.
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