English  |  正體中文  |  简体中文  |  全文筆數/總筆數 : 62805/95882 (66%)
造訪人次 : 3884587      線上人數 : 355
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: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/45973

    題名: Sound emission of ducted premixed flames
    作者: Chen, Tzeng-yuan;Chen, Man-ge
    貢獻者: 淡江大學航空太空工程學系
    日期: 1999-03
    上傳時間: 2013-03-20 16:23:36 (UTC+8)
    出版者: London: Elsevier Ltd
    摘要: Sound emissions of laminar premixed flames stabilized on the outlet plane of a burner located at one end of a rectangular duct were experimentally investigated. Specifically, this research applied the approach of direct acoustic admittance measurement to investigate and elucidate the close relations between sound emission, non-reactive burner acoustic admittance, flame equivalence ratio and combustor length. The admittance data were obtained by directly measuring the amplitudes of velocity and pressure oscillations, and the phase relations between the oscillatory velocity and pressure. Results of this research reveal that flames would hardly induce sound emissions without the “right” acoustic property of the non-reactive burner system. Also, the reactive burner acoustic admittance is dominated by the non-reactive burner acoustic admittance. The flame is important in determining the strength of possible sound emissions. This study also shows that the fundamental frequency of the combustor system should be within the range of critical frequencies of the non-reactive burner system to sustain possible sound emissions. The critical frequencies, the frequencies for possible sound emissions and the “right” acoustic property of the burner system could be approximately predicted by knowing the distribution of the imaginary parts of non-reactive burner acoustic admittance.
    關聯: Journal of Sound and Vibration 221(2), pp.221-234
    DOI: 10.1006/jsvi.1998.2008
    顯示於類別:[航空太空工程學系暨研究所] 期刊論文


    檔案 大小格式瀏覽次數



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