Characteristics of force chains in the flow of photoelastic particles under a barrier

IF 2.3 4区工程技术 Q3 ENGINEERING, CHEMICAL

Particulate Science and Technology Pub Date : 2023-10-05 DOI:10.1080/02726351.2023.2263380

Enlin Long, Qingfa Chen, Jun Liu

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引用次数: 0

Abstract

AbstractThe essence of particle flow is the microscale breaking and rebuilding of force chains. Therefore, it is essential to conduct research on force chains during the process of particle flow. This study focuses on particle flow during the ore drawing process, develops a photoelastic experimental system for physical ore drawing, studies the macroscopic change characteristics of force chains, analyzes the statistical properties of force chain intensity, length, quantity, and azimuth, and discusses the particle blockage phenomenon and its engineering application in ore drawing. The results show that the length of the strong force chains is mostly about five particles, with fewer numbers, and their direction is primarily concentrated between 60° and 120°. Weak force chains are abundant and distributed uniformly in all directions. In addition, based on the arching and blocking characteristics of particles, a novel sealing method for the ore pass is proposed. The research results deepen the understanding of granular material flow hazards and provide a valuable reference for similar engineering analyses.Keywords: Ore drawingphotoelastic experimentparticle flowparticle blockageforce chain Authors’ contributionsEnlin Long: Conceptualization, Software, Formal analysis, Investigation, Data curation, Writing-original draft. Qingfa Chen: Resources, Funding acquisition, Supervision, Project administration, Writing-review & editing. Jun Liu: Writing-review & editing.Disclosure statementNo potential conflict of interest was reported by the author(s). The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.Additional informationFundingThis work was supported by the National Natural Science Foundation of China [grant number 51964003].

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势垒下光弹性粒子流动中的力链特性

摘要粒子流的本质是力链在微观尺度上的断裂和重建。因此，对颗粒流动过程中的力链进行研究是十分必要的。本研究以放矿过程中的颗粒流动为研究对象，开发了物理放矿的光弹性实验系统，研究了力链的宏观变化特征，分析了力链强度、长度、数量和方位角的统计特性，探讨了颗粒堵塞现象及其在放矿中的工程应用。结果表明:强力链的长度多在5个粒子左右，数量较少，方向主要集中在60°~ 120°之间;弱力链丰富且在各个方向上分布均匀。此外，根据颗粒的拱状和阻塞特性，提出了一种新的矿道密封方法。研究结果加深了对颗粒物料流动危害的认识，为类似工程分析提供了有价值的参考。关键词:放矿光弹实验粒子流粒子阻塞力链作者贡献龙森林:概念化，软件，形式分析，调研，数据整理，写作-原稿陈庆发:资源、资金筹措、监理、项目管理、文审编辑。刘军:写作、评论、编辑。披露声明作者未报告潜在的利益冲突。作者声明，他们没有已知的竞争经济利益或个人关系，可能会影响本文所报道的工作。本研究受国家自然科学基金资助[批准号:51964003]。

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来源期刊

Particulate Science and Technology 工程技术-工程：化工

CiteScore

4.40

自引率

4.00%

发文量

审稿时长

12 months

期刊介绍： Particulate Science and Technology, an interdisciplinary journal, publishes papers on both fundamental and applied science and technology related to particles and particle systems in size scales from nanometers to millimeters. The journal''s primary focus is to report emerging technologies and advances in different fields of engineering, energy, biomaterials, and pharmaceutical science involving particles, and to bring institutional researchers closer to professionals in industries. Particulate Science and Technology invites articles reporting original contributions and review papers, in particular critical reviews, that are relevant and timely to the emerging and growing fields of particle and powder technology.