淡江大學機構典藏:Item 987654321/34804
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 62805/95882 (66%)
造访人次 : 3885233      在线人数 : 319
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: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/34804


    题名: 以多相流模式模擬掃流微過濾
    其它题名: Simulation of cross-flow microfiltration by multiphase flow model
    作者: 方巽禾;Fang, Hsun-he
    贡献者: 淡江大學化學工程與材料工程學系碩士班
    吳容銘;Wu, Rome-ming
    关键词: 掃流微過濾;多相流;模擬;計算流體力學;cross-flow microfiltration;multiphase flow;simulation;CFD
    日期: 2007
    上传时间: 2010-01-11 05:37:42 (UTC+8)
    摘要: 本研究以多相流模式模擬掃流微過濾之濾餅成長情形,探討濾餅的性質與結垢的機制,並進行掃流過濾實驗,取得數據作為比較,並了解掃流微過濾之特性。實驗中使用平均孔徑為0.1 μm的醋酸纖維膜(Mixed cellulose ester)過濾平均粒徑為0.8 μm的聚甲基丙烯酸甲酯(PMMA)粒子。在兩相流動的掃流微過濾中,改變懸浮液濃度與掃流速度,實驗結果顯示,懸浮液濃度越高與掃流速度越慢的條件下濾速越低,平均孔隙度也會逐漸降低。而利用計算流體力學(Computational Fluid Dynamics, CFD)軟體FLUENT6.2的多相流模式模擬濾餅成長是可能的,並可利用受力分析推測結垢機制。最後,根據動態實驗分析結果,得知濾餅的平均孔隙度隨著過濾時間的增加而減小,而濾餅阻力則是隨著過濾時間的增加而增加。
    The study simulates cross-flow microfiltration by multiphase flow model. In order to discuss cake property and fouling mechanism, we experiment on cross-flow microfiltration. The data can be compared with simulation results and realize the property of cross-flow microfiltration. A filter membrane, made of mixed cellulose ester, with a mean pore size of 0.1 μm is used to filter 0.8 μm PMMA particles. On two-phase flow while varying suspension concentration and cross-flow velocity, we show that filtration rate is lowered with higher suspension concentration and lower cross-flow velocity, while average porosity is lowered as well. Also, we use Computational Fluid dynamics, CFD, software FLUENT6.2’s multiphase flow model to estimate cake growth and use force analysis to figure out fouling mechanism. Lastly, using results obtained from dynamic experiment, we know that cake average porosity is lower with filtration time, however, cake resistance is higher.
    显示于类别:[化學工程與材料工程學系暨研究所] 學位論文

    文件中的档案:

    档案 大小格式浏览次数
    0KbUnknown289检视/开启

    在機構典藏中所有的数据项都受到原著作权保护.

    TAIR相关文章

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