Kevin Chu
Professor Supervisor of Doctorate Candidates Supervisor of Master's Candidates
Name (Simplified Chinese):Kevin Chu
Name (English):Kevin Chu
Name (Pinyin):Chu Kaiwei
E-Mail:k.chu@sdu.edu.cn
Date of Employment:2019-04-17
School/Department:School of Qilu Transportation
Administrative Position:Distinguished Professor
Education Level:Postgraduate (Doctoral)
Business Address:山东大学兴隆山校区实验楼629
Gender:Male
Contact Information:电话：0531-86358726
Degree:Doctor
Status:Employed
Alma Mater:The Uni. of New South Wales (UNSW), Australia
Whether on the job:1
Discipline:Geotechnical Engineering
Hydraulic Structure Engineering
Academic Honor:
Honors and Titles:
2018-08-09 • 中国航天第三届空天动力联合会议“优秀论文”奖（本人的贡献在于开发了高超音速情况下的CFD-DEM数学模型）。题目：“基于CFD-DEM算法的固体发动机气-粒两相流模拟”。授予单位：中国航天第三专业信息网
2016-03-23 • “Best Poster Award（最佳板报奖）”on the First International Workshop on Computational Particle Technology and Multiphase Processes(第一届计算颗粒技术国际大会)，题目：“CFD-DEM study of gas-particle flow in complex pipe syst
2013-08-07 • Chemical Engineering Science 《化学工程与科学》“Top Cited Papers Award for 2011 and 2012（2011和2012年度高引用论文奖），题目：CFD-DEM simulation of gas-solid flow in a cyclone separator（旋风分离器中气-粒两相流的CFD-DEM数值模拟）
2013-04-17 Powder Technology 《粉体工程》和Building and Environment 《建筑与环境》授予优秀论文评阅人
2007 Excellent Overseas Postgraduate Students
2001 科学技术成果鉴定证书
Hits:
Journal:Particuology
Place of Publication:中国
Key Words:Dense medium cyclone，Medium-to-coal ratio，Discrete element method，Computational fluid dynamics，Low-density coal tail
Abstract:Dense medium cyclone (DMC) is the working horse in coal industry. In practice, it is usually operated under constant pressure and the operational conditions (mainly medium-to-coal (M:C) ratio and operational pressure) need to be adjusted according to coal washability data (mainly coal particle size and density distributions). Nonetheless, until now it is still not well understood how the M:C ratio would affect the performance of DMCs especially under the practical conditions. In this work, the effect of M:C ratio is for the first time numerically studied under conditions similar to plant operation by using both traditional and coarse-grained (CG) combined approach of computational fluid dynamics (CFD) and discrete element method (DEM), called as traditional CFD-DEM and CG CFD-DEM, in which the flow of coal particles is modelled by DEM or CG DEM which applies Newton’s laws of motion to individual particles and that of medium flow by the conventional CFD which solves the local-averaged Navier-Stokes equations, allowing consideration of particle–fluid mutual interaction and particle–particle collisions. Moreover, impulse and momentum connection law is used to achieve energy conservation between traditional CFD-DEM and CG CFD-DEM. It is found that under constant pressure, the M:C ratio affects DMC performance significantly. The specific effect depends on coal washability or coal type. Under extremely low M:C ratio, the phenomenon that high-quality coal product is misplaced to reject is successfully reproduced, which has been observed in plants in Australian coal industry and called as “low-density tail”. Moreover, strategies are proposed to mitigate the “low-density tail” phenomenon based on the model.
Indexed by:Journal paper
Discipline:Engineering
Document Type:J
Volume:68
Page Number:44-56
Translation or Not:no
Date of Publication:2022-04-01
Included Journals:SCI
Pre One:Prediction of medium-to-coal ratio effect in a dense medium cyclone by using both traditional and coarse-grained CFD-DEM models
Next One:Li Z Y, Tong Z B, Yu A B, Miao H, Chu K W.Numerical investigation of separation efficiency of the cyclone with supercritical fluid–solid flow. Particuology, 62（2022）: 36-46. （IF=3.067）（中科院分区：2区）
