English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 51900/87065 (60%)
造訪人次 : 8471161      線上人數 : 105
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
搜尋範圍 查詢小技巧:
  • 您可在西文檢索詞彙前後加上"雙引號",以獲取較精準的檢索結果
  • 若欲以作者姓名搜尋,建議至進階搜尋限定作者欄位,可獲得較完整資料
  • 進階搜尋
    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/987654321/44891


    題名: The Effects of Turbulence on Mean Flow Past Fixed and Oscillating Rectangular Prisms
    其他題名: 紊流場中振動矩柱之尾跡現象研究
    作者: Lu, Po-chien;Cheng, Chii-meng;Kao, Chung-ren
    貢獻者: 淡江大學水資源及環境工程學系;淡江大學土木工程學系
    關鍵詞: Forced oscillating;Vortex shedding;Uniform turbulent flow;Wind tunnel testing;強制振動;渦散;均勻紊流;風洞測試
    日期: 1997-11
    上傳時間: 2013-07-11 11:59:55 (UTC+8)
    出版者: Taipei : Chinese Institute of Chemical Engineers
    摘要: The characteristics of vortex wakes of rectangular prisms, with and wihtout forced osicllation, were experimentally investigated, as placed in different uniform turbulent flows. The experimental parameters were the turbulence intensities and length scales of the uniform turbulent flows and the depth-to-width ratios and vibrating frequencies, with fixed amplitudes, of the rectangular prisms. Measurements were taken on the lateral pressure and base pressure of the prisms, the point velocity in the wake, and the phase angle between lateral pressure and body displacement. The pressure coefficients (-CP, -Cpb• Cp', C~b) are much greater when the oscillating cylinder is in lock-in range and reach peak values at resonant frequencies in a uniform flow. High turbulence intensity weakens the vortex shedding, thereby decreasing the pressure coefficients and peak values of the spectra. Increasing the turbulent length scale causes the pressure coefficients to increase. The critical depthto- width ratio is found at HID=.6, while decreasing in this ratio results owing to increases in turbulence intensities.
    關聯: Journal of the Chinese Institute of Engineers=中國工程學刊 20(6), pp.615-622
    DOI: 10.1080/02533839.1997.9741870
    顯示於類別:[教育科技學系暨研究所] 會議論文
    [水資源及環境工程學系暨研究所] 期刊論文

    文件中的檔案:

    檔案 大小格式瀏覽次數
    index.html0KbHTML145檢視/開啟

    在機構典藏中所有的資料項目都受到原著作權保護.

    TAIR相關文章

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