METHANE-AIR MARKSTEIN NUMBERS FROM MEASUREMENTS OF THERMOACOUSTIC INSTABILITY

R. C. ALDREDGE

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METHANE-AIR MARKSTEIN NUMBERS FROM MEASUREMENTS OF THERMOACOUSTIC INSTABILITY

机译：热声不稳定测量值中的甲烷-空气MARKSTEIN数

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Markstein numbers characterizing the influence of stretch on the speed of thin laminar flames are determined computationally for lean and rich methane-air mixtures using results from a recent experimental study of thermoacoustic instability in a Taylor-Couette burner. A model describing the response of a thin laminar flame to acoustic flow-field excitation, which is found to exhibit dependence of thermoacoustic-instability characteristics on Markstein number, is used to determine Markstein numbers from measurements of the critical acoustic-velocity amplitudes associated with the onset of the secondary thermoacoustic instability. The model accounts for the Saffman-Taylor influence of viscosity on thermoacoustic instability for adiabatic flame propagation between closely separated walls.

机译：使用最近在泰勒-库埃特燃烧器中进行的热声不稳定性实验研究的结果，通过计算确定了稀薄和浓甲烷-空气混合物的表征拉伸对薄层流火焰速度的影响的马克斯坦数。描述薄层火焰对声流场激发的响应的模型被发现表现出热声不稳定性特征对马克斯坦数的依赖性，该模型用于通过与声波相关的临界声速振幅的测量来确定马克斯坦数。继发的热声不稳定性。该模型考虑了Saffman-Taylor粘度对紧密分隔壁之间绝热火焰传播的热声不稳定性的影响。

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来源
《Combustion Science and Technology》 |2005年第6期|p.1023-1047|共25页
作者
R. C. ALDREDGE;
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作者单位

Department of Mechanical and Aeronautical Engineering, University of California, Davis, California, USA;

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原文格式 PDF
正文语种 eng
中图分类热力工程、热机;
关键词
markstein number; thermoacoustic instability; saffman-taylor instability;

机译：Markstein数;热声不稳定性;Saffman-Taylor不稳定性;

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1. Experimental evaluation of Markstein-number influence on thermoacoustic instability [J] . R.C. Aldredge, N.J. Killingsworth Combustion and Flame . 2004,第1a2期

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2. Experimental Study of the Darrieus-Landau instability on an Inverted - 'V' flame, and measurement Of the Markstein number [J] . Jean-Marie Truffaut, Geoff Searby Combustion Science and Technology . 1999,第1a6期

机译：倒“ V”型火焰上的Darrieus-Landau不稳定性的实验研究和Markstein数的测量
3. Correlations for the laminar burning velocity and burned gas Markstein length of methane-air mixtures diluted with flue gases at high temperatures and pressures [J] . Duva Berk Can, Wang Yen Cheng, Chance Lauren Elizabeth, Fuel . 2020,第Deca1期

机译：在高温和压力下用烟道气稀释的甲烷 - 空气混合物的层状燃烧速度和燃烧气体Markstein的相关性
4. Experimental study on Laminar Flame Speeds and Markstein length of Methane-air mixtures at atmospheric conditions [C] . Alaeldeen Altag Yousif, Shaharin A. Sulaiman International Conference and Exhibition on Sustainable Energy and Advanced Materials . 2015

机译：大气条件下甲烷 - 空气混合物的层状火焰速度和Markstein长度的实验研究
5. Analytical Investigation of Thermoacoustic Instabilities in Premixed Combustion Systems. [D] . Rani, Vijaya Krishna. 2017

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6. Thermoacoustic elastography: recovery of bulk elastic modulus of heterogeneous media using tomographically measured thermoacoustic measurements [O] . Zhu Zheng, Huabei Jiang 2019

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7. Combustion Instabilities in Industrial Gas Turbines — Measurements on Operating Plant and Thermoacoustic Modelling [O] . David E. Hobson, John E. Fackrell, G. Hewitt 1999

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METHANE-AIR MARKSTEIN NUMBERS FROM MEASUREMENTS OF THERMOACOUSTIC INSTABILITY

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