{"title":"Validation of DEM simulations for a drum-type agitation mill using particle velocities measured by 3D PTV","authors":"Takuya Tatsumoto , Yutaro Takaya , Yuki Tsunazawa , Taketoshi Koita , Keishi Oyama , Chiharu Tokoro","doi":"10.1016/j.apt.2024.104693","DOIUrl":null,"url":null,"abstract":"<div><div>We found that the impact energy calculated by discrete element method (DEM) simulation can be used to explain the liberation of materials from electronic scrap (e-scrap) in a previous study; however, the absolute value of the impact energy had not been validated. Thus, we attempted to confirm the reliability by considering the particle velocity, which is highly related to impact energy. The comminution experiment was conducted using a drum-type agitation mill, and the particle velocity was measured by 3D particle tracking velocimetry (PTV) based on moving body analysis. The particle velocities for both the DEM simulation and PTV were compared for two types of particles, a non-breakable steel component and a connecting component that represents a breakable form of e-scrap. As a result, the particle velocities obtained from the two methods were within a relative error of 10% for the steel component, and thus the reliability of the impact energy was indirectly confirmed. In contrast, for the connecting component, the particle velocity from the DEM simulations was more than 50% higher, suggesting the influence of fracture energy. By calibrating the DEM simulation based on the particle velocity from PTV, the energy efficiency of fracture was estimated to be approximately 60%.</div></div>","PeriodicalId":7232,"journal":{"name":"Advanced Powder Technology","volume":"35 12","pages":"Article 104693"},"PeriodicalIF":4.2000,"publicationDate":"2024-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Powder Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0921883124003698","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, CHEMICAL","Score":null,"Total":0}
引用次数: 0
Abstract
We found that the impact energy calculated by discrete element method (DEM) simulation can be used to explain the liberation of materials from electronic scrap (e-scrap) in a previous study; however, the absolute value of the impact energy had not been validated. Thus, we attempted to confirm the reliability by considering the particle velocity, which is highly related to impact energy. The comminution experiment was conducted using a drum-type agitation mill, and the particle velocity was measured by 3D particle tracking velocimetry (PTV) based on moving body analysis. The particle velocities for both the DEM simulation and PTV were compared for two types of particles, a non-breakable steel component and a connecting component that represents a breakable form of e-scrap. As a result, the particle velocities obtained from the two methods were within a relative error of 10% for the steel component, and thus the reliability of the impact energy was indirectly confirmed. In contrast, for the connecting component, the particle velocity from the DEM simulations was more than 50% higher, suggesting the influence of fracture energy. By calibrating the DEM simulation based on the particle velocity from PTV, the energy efficiency of fracture was estimated to be approximately 60%.
期刊介绍:
The aim of Advanced Powder Technology is to meet the demand for an international journal that integrates all aspects of science and technology research on powder and particulate materials. The journal fulfills this purpose by publishing original research papers, rapid communications, reviews, and translated articles by prominent researchers worldwide.
The editorial work of Advanced Powder Technology, which was founded as the International Journal of the Society of Powder Technology, Japan, is now shared by distinguished board members, who operate in a unique framework designed to respond to the increasing global demand for articles on not only powder and particles, but also on various materials produced from them.
Advanced Powder Technology covers various areas, but a discussion of powder and particles is required in articles. Topics include: Production of powder and particulate materials in gases and liquids(nanoparticles, fine ceramics, pharmaceuticals, novel functional materials, etc.); Aerosol and colloidal processing; Powder and particle characterization; Dynamics and phenomena; Calculation and simulation (CFD, DEM, Monte Carlo method, population balance, etc.); Measurement and control of powder processes; Particle modification; Comminution; Powder handling and operations (storage, transport, granulation, separation, fluidization, etc.)