Experimental Study on the Turbulent Premixed Flame Structural Characteristics Based on the Wavelet Transform
Experimental Study on the Turbulent Premixed Flame Structural Characteristics Based on the Wavelet Transform
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基于小波变换的湍流预混火焰结构特性实验研究
DOI：
10.1021/acs.energyfuels.7b02792
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发表时间：
2017-11
期刊：
影响因子：
5.3
通讯作者：
Li Fu-Sheng
中科院分区：
文献类型：
--
作者：
Jiang Yan-Huan;Li Guo-Xiu;Li Hong-Meng;Li Lei;Li Fu-Sheng
为了研究火焰固有不稳定性和湍流对火焰结构特性的影响，在常温常压湍流燃烧弹中进行了50% H2/50% CO当量比为0.6的预混燃烧实验。定义关联度，研究不同时刻火焰结构特征之间的关联关系，利用小波变换研究不同尺度下火焰结构特征的细节成分。结果表明，随着火焰的发展，细胞结构增强，关联度逐渐降低。细部成分在较大尺度上的波动更强，包含的能量也更多，这与引起火焰前缘复杂的主要因素相对应。随着湍流强度的增加，细节分量的均方根振幅和能量增加，导致不同扰动的相互作用增加，而…
To investigate the effect of the flame inherent instabilities and turbulence on the flame structural characteristics, premixed combustion experiments of 50% H2/50% CO at a equivalence ratio of 0.6 were conducted in a turbulent combustion bomb in atmospheric temperature and pressure. The correlation degree was defined to study the correlation relation between flame structural characteristics at different moments, and the wavelet transform was used to investigate the detail components at different scales. The results indicate that, with the development of the flame, the cellular structure was enhanced and the correlation degree gradually decreased. The fluctuations of the detail components at the larger scale were stronger and included more energy, which corresponded to the main factor causing the flame front complex. With the turbulence intensity increase, the root mean square amplitude and energy of the detail components increased, leading to the increase of the interaction of different disturbances, whil...
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影响因子：
11.2
作者：
Omid Askari;M. Elia;M. Ferrari;H. Metghalchi
通讯作者：
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影响因子：
4.4
作者：
Kenjiro Mukaiyama;Shimon Shibayama;K. Kuwana
通讯作者：
Kenjiro Mukaiyama;Shimon Shibayama;K. Kuwana
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作者：
A. Sen;Jinhua Wang;Zuo-hua Huang
通讯作者：
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作者：
Galmiche, B.;Halter, F.;Dagaut, P.
通讯作者：
Dagaut, P.
影响因子：
7.4
作者：
Li, Hongmeng;Li, Guoxiu;Zhou, Zihang
通讯作者：
Zhou, Zihang