English  |  正體中文  |  简体中文  |  Items with full text/Total items : 49258/83761 (59%)
Visitors : 7139655      Online Users : 65
RC Version 7.0 © Powered By DSPACE, MIT. Enhanced by NTU Library & TKU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
  • Adv. Search
    HomeLoginUploadHelpAboutAdminister Goto mobile version
    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/38342


    Title: Investigation of the rich limit of operation of Helmholtz type pulse combustor
    Other Titles: 赫姆何茲式脈動燃燒器操作富油點之研究
    Authors: 湯敬民
    Contributors: 淡江大學航空太空工程學系
    Date: 1994
    Issue Date: 2010-01-11 15:06:40 (UTC+8)
    Abstract: The work presented in this paper is part of an investigation into the operating characteristics of natural gas fired, valved, Helmholtz type, pulse combustors. This article presents some experimental results that describes the controlling mechanisms which control the existence of a rich limit of operation of the pulse combustor. Acoustic pressure oscillations and the global heat release rates were measured to determine how they and their correlation determine the performance of the pulse combustor. Experimental results indicate that the combustion induced driving force near the lean limit is barely larger than the damping of the system. This is due to the relatively large phase difference between the heat release and pressure oscillations under these operating conditions. Near the rich limit (i.e., near .phi.=1), on the other hand, pressure and heat release fluctuations are nearly in phase. Therefore, the driving force is relatively high. Nevertheless, a rich limit of operation is reached. The investigation has shown that this limit is reached because when operating near the stoichiometric ratio, the rapidly entering air jet quenches the ignition source (i.e. reacting gas pockets) left over from the previous cycle.
    Relation: 中華民國第四屆燃燒科技應用研討會論文集=Proceedings of the Fourth National Conference on Combustion Science and; Technology, pp.1-5
    Appears in Collections:[航空太空工程學系暨研究所] 會議論文

    Files in This Item:

    File SizeFormat
    Investigation of the Rich Limit of Operation of Helmholtz Type Pulse Combustor_西文摘要.docx15KbMicrosoft Word102View/Open

    All items in 機構典藏 are protected by copyright, with all rights reserved.


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