English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 57480/91031 (63%)
造访人次 : 13416886      在线人数 : 238
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜寻范围 查询小技巧:
  • 您可在西文检索词汇前后加上"双引号",以获取较精准的检索结果
  • 若欲以作者姓名搜寻,建议至进阶搜寻限定作者字段,可获得较完整数据
  • 进阶搜寻

    jsp.display-item.identifier=請使用永久網址來引用或連結此文件: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/78995

    题名: Improvement of Particle Separation Efficiency by Installing Conical Top-Plate in Hydrocyclone
    作者: Hwang, Kuo-jen;Hwang, Ya-wen;Yoshida, Hideto;Shigemori, Kazuha
    贡献者: 淡江大學化學工程與材料工程學系
    关键词: Hydrocyclone;Particle separation;Particle classification;Computational fluid dynamics;Reynolds stress model
    日期: 2012-12
    上传时间: 2012-11-16 09:28:06 (UTC+8)
    出版者: Lausanne: Elsevier S.A.
    摘要: The improvement of particle separation efficiency in a 20-mm hydrocyclone by installing a conical top-plate is studied. The effects of top-plate cone angle on the fluid velocity distributions and particle trajectories are discussed using computational fluid dynamics. Conical top-plate installation could effectively reduce the low velocity regions near the outer vortex finder surface. Increasing the cone angle will decrease the cross-sectional area of downward flow in the upper cylindrical part, decrease the circulation flow and therefore increase the tangential velocity and centrifugal effect near the hydrocyclone wall. Particle trajectories are simulated based on a Lagrangian frame by considering the interactions with continuous phase once the fluid velocity distributions are known. Quicker particle collection is induced into the underflow by installing a conical top-plate. However, too quick downward flow may increase the possibility of particle entraining into the secondary vortex in the conical part under a given underflow ratio. The calculated values of particle separation efficiency are compared with the available experimental data to verify numerical method accuracy. The simulated results agree fairly well with the experimental data. It can be concluded that installing a conical top-plate is beneficial for improving particle separation efficiency. The optimum cone angle design is 30°.
    關聯: Powder Technology 232, pp.41-48
    DOI: 10.1016/j.powtec.2012.07.059
    显示于类别:[化學工程與材料工程學系暨研究所] 期刊論文


    档案 描述 大小格式浏览次数
    1-s2.0-S0032591012005414-main.pdf3412KbAdobe PDF0检视/开启



    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library & TKU Library IR teams. Copyright ©   - 回馈