振动气流化颗粒物料中侵入物的异常下降。

IF 2.4 3区物理与天体物理 Q1 Mathematics

Physical review. E Pub Date : 2025-01-01 DOI:10.1103/PhysRevE.111.L013403

Oscar J Punch, Qiang Guo, Maty Gueye, Javad Omidi, Michael W Jordan, Jagan Mohan Sanghishetty, Christopher M Boyce

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引用次数: 0

摘要

通过实验和计算研究了密集侵入盘在垂直气流和振动作用下通过颗粒状物料流化的过程。单个入侵者的下降速度与系统底部以上的距离有关，模拟表明，这是由于颗粒材料中空间相关的空隙部分改变了入侵者的有效阻力。两个垂直排列的闯入者经历了一个类似的牵拉-接吻-翻滚的过程，这是由于底部的闯入者由于顶部闯入者的重量造成的颗粒压实而减速而形成的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Anomalous descent of intruders in vibrated gas-fluidized granular materials.

The descent of dense intruder disks through granular material fluidized by vertical gas flow and vibration is investigated experimentally and computationally. Single intruders descend with a velocity which oscillates based on distance above the bottom of the system, which simulations show is due to a spatially dependent void fraction in the granular material changing the effective drag force on the intruder. Two vertically aligned intruders undergo a drafting-kissing-tumbling analog which forms because the bottom intruder decelerates due to particle compaction from the weight of the top intruder.

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来源期刊

Physical review. E 物理-物理：流体与等离子体

CiteScore

4.60

自引率

16.70%

发文量

审稿时长

3.3 months

期刊介绍： Physical Review E (PRE), broad and interdisciplinary in scope, focuses on collective phenomena of many-body systems, with statistical physics and nonlinear dynamics as the central themes of the journal. Physical Review E publishes recent developments in biological and soft matter physics including granular materials, colloids, complex fluids, liquid crystals, and polymers. The journal covers fluid dynamics and plasma physics and includes sections on computational and interdisciplinary physics, for example, complex networks.