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    Please use this identifier to cite or link to this item: http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/45993


    Title: Experimental study of flame driving function in an acoustically excited duct with anchored flames
    Authors: Chen, Tzeng-Yuan;Chen, Chien-Pang
    Contributors: 淡江大學航空太空工程學系
    Keywords: Acoustic fields;Acoustic intensity;Acoustic wave effects;Ducts;Flame research;Laser Doppler velocimeters;Microphones;Oscillations;Pressure distribution;Pressure measurement;Transfer functions;Velocity measurement;Acoustic admittance;Flame driving function;Flame equivalence ratio;Flame zone;Fluid mechanics
    Date: 2001-10
    Issue Date: 2013-03-20 16:22:18 (UTC+8)
    Publisher: Heidelberg: Springer
    Abstract: This research experimentally investigates the flame driving function in an acoustically excited vertical duct with a laminar, premixed flame anchored on a grid. The flame driving function is determined from the measured acoustic intensity upstream and downstream of the flame zone, which relates both the acoustic velocities and pressures on either side of the flame zone. Results of this research reveal that the location of the flame zone on the acoustic field plays the main role in determining the sign and magnitude of the flame driving function. The flame equivalence ratio plays a role only in the magnitude of the flame driving function. This study also shows that the characteristics of the flame driving function can be qualitatively predicted by knowing the imaginary part of nonreactive acoustic admittance at the flame location.
    Relation: Experiments in Fluids 31(4), pp.457-464
    DOI: 10.1007/s003480100335
    Appears in Collections:[航空太空工程學系暨研究所] 期刊論文

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