淡江大學機構典藏:Item 987654321/83723
English  |  正體中文  |  简体中文  |  全文笔数/总笔数 : 62822/95882 (66%)
造访人次 : 4021140      在线人数 : 1036
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/987654321/83723


    题名: 以主動控制法探討壓電晶片振動對低速管流內懸浮粒子壁面沉積之影響
    其它题名: Active Control of the Particle Deposition in a Low-Speed Tunnel Flow via the Piezoelectric Plates Vibration
    作者: 葉泳蘭;湯敬民
    贡献者: 淡江大學航空太空工程學系
    关键词: 主動控制;壓電晶片;壁面沉積;Active control;Piezo-electric plate;Sedimentation
    日期: 2011-04
    上传时间: 2013-03-20 16:56:48 (UTC+8)
    出版者: 台南市：中華民國航空太空學會
    摘要: 本研究主要以主動控制之方法以定量及定性之實驗法探討壓電晶片振動對低速管流中懸浮粒子於壁面沉積的影響，實驗之控制參數爲出口風速、晶片輸入電壓、振動頻率及晶片裝置位置等。實驗中，基於出口高度(H=30mm)爲特徵長度之雷諾數爲111與133，研究過程藉量測植入與流失的粒子重量差作沉積之定量分析。結果顯示在較高出口風速及較低振動頻率時對沉積有較大的減少量，此點由沉積於壁面粒子波紋之定性分析中可相互得到應證。以一字型熱線測速儀爲主要設備的量測中發現在晶片後方之流場有較大的流向速度擾動強度，頻譜分析則顯示激擾頻率的改變對晶片下游之流場較晶片間之流場有較顯著之影響，過近的晶片距離會交互作用使得沉積增加。
    The main objective of this study was to investigate the particle deposition in a low-speed tunnel flow excited by piezoelectric plates experimentally. The controlling parameters were flow speed, excitation frequency, input voltage and the setting position of plates. The Reynolds numbers base on the exit height H=30mm were 111 and 133 corresponding to two flow speeds. The quantitative analysis was done by measuring the difference of weights between seeded and outflow particles. The results revealed that the decrement of deposition was due to higher flow speed and lower oscillating frequency. Similar results were also been obtained by comparing the peak-to-peak distance and the amplitude of the wavy shaped distributions of sediments on the wall. Stronger fluctuations were observed downstream of the plates measured using hot-wire anemometry. The spectra distribution also revealed that the variation of the excitation frequency affected the downstream flow field more than between each other. In addition, the deposition was increased by the strong interaction of the plates while they were closely placed.
    關聯: Journal of Aeronautics, Astronautics and Aviation. Series B=航空太空及民航學刊. 系列B 43(1)，頁11-18
    显示于类别:[航空太空工程學系暨研究所] 期刊論文

    文件中的档案:

    档案 描述 大小格式浏览次数
    1990-7729_43(1)p11-17.pdf997KbAdobe PDF157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