{"title":"Effect of abrasive volume fraction on energy utilization in suspension abrasive water jets based on VOF-DEM method","authors":"Changjiang Chen , Jianping Wei , Tiegang Zhang , Huidong Zhang , Yong Liu","doi":"10.1016/j.powtec.2024.120427","DOIUrl":null,"url":null,"abstract":"<div><div>Suspension abrasive water jets (AWJs) rock breaking is the kinetic energy of abrasive particle group transport and transfer. However, it is difficult to be popularized and utilized due to the high energy consumption of rock breaking. In this study, the energy transfer rate in AWJs was focused on and was investigated using numerical and experimental methods. A two-way coupled algorithm was used to reproduce the oscillation characteristics of abrasive jets velocities, indicating that not only the abrasives' velocities but also the abrasives' distribution is crucial in energy transfer rate. Different dominant factors accounting for the abrasives' velocities and distribution were identified, and two parameters were proposed to account for the energy transfer process during the jet evolution process. The optimum abrasives' volume fraction was determined based on the evolution of the energy density and ratio of abrasive kinetic energy to the total energy, which was validated by rock breaking experiments. Increasing ratio of abrasive kinetic energy to the total energy by using the method of changing the volume fraction of the abrasive is an effective method to improve the rock breaking efficiency of suspension abrasive water jets.</div></div>","PeriodicalId":407,"journal":{"name":"Powder Technology","volume":"449 ","pages":"Article 120427"},"PeriodicalIF":4.5000,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Powder Technology","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0032591024010714","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
Suspension abrasive water jets (AWJs) rock breaking is the kinetic energy of abrasive particle group transport and transfer. However, it is difficult to be popularized and utilized due to the high energy consumption of rock breaking. In this study, the energy transfer rate in AWJs was focused on and was investigated using numerical and experimental methods. A two-way coupled algorithm was used to reproduce the oscillation characteristics of abrasive jets velocities, indicating that not only the abrasives' velocities but also the abrasives' distribution is crucial in energy transfer rate. Different dominant factors accounting for the abrasives' velocities and distribution were identified, and two parameters were proposed to account for the energy transfer process during the jet evolution process. The optimum abrasives' volume fraction was determined based on the evolution of the energy density and ratio of abrasive kinetic energy to the total energy, which was validated by rock breaking experiments. Increasing ratio of abrasive kinetic energy to the total energy by using the method of changing the volume fraction of the abrasive is an effective method to improve the rock breaking efficiency of suspension abrasive water jets.
期刊介绍：
Powder Technology is an International Journal on the Science and Technology of Wet and Dry Particulate Systems. Powder Technology publishes papers on all aspects of the formation of particles and their characterisation and on the study of systems containing particulate solids. No limitation is imposed on the size of the particles, which may range from nanometre scale, as in pigments or aerosols, to that of mined or quarried materials. The following list of topics is not intended to be comprehensive, but rather to indicate typical subjects which fall within the scope of the journal's interests:
Formation and synthesis of particles by precipitation and other methods.
Modification of particles by agglomeration, coating, comminution and attrition.
Characterisation of the size, shape, surface area, pore structure and strength of particles and agglomerates (including the origins and effects of inter particle forces).
Packing, failure, flow and permeability of assemblies of particles.
Particle-particle interactions and suspension rheology.
Handling and processing operations such as slurry flow, fluidization, pneumatic conveying.
Interactions between particles and their environment, including delivery of particulate products to the body.
Applications of particle technology in production of pharmaceuticals, chemicals, foods, pigments, structural, and functional materials and in environmental and energy related matters.
For materials-oriented contributions we are looking for articles revealing the effect of particle/powder characteristics (size, morphology and composition, in that order) on material performance or functionality and, ideally, comparison to any industrial standard.
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