Kurosaka Takuya, Masuda Shinga, Gotoda Hiroshi
Department of Mechanical Engineering, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo 125-8585, Japan.
Chaos. 2021 Jul 1;31(7):073121. doi: 10.1063/5.0045127.
We experimentally study the attenuation behavior of thermoacoustic combustion oscillations using causality analysis, multiscale randomness analysis, and a complex network. We supply a steady air jet from the injector rim to suppress combustion oscillations. The directional coupling between pressure and heat release rate fluctuations is significantly weakened during the suppression of combustion oscillations. The loss of the primary hub in the turbulence network plays an important role in the degeneration of combustion oscillations.
我们使用因果分析、多尺度随机性分析和复杂网络对热声燃烧振荡的衰减行为进行了实验研究。我们从喷油器边缘提供稳定的空气射流以抑制燃烧振荡。在燃烧振荡抑制过程中，压力与热释放率波动之间的方向耦合显著减弱。湍流网络中主枢纽的丧失在燃烧振荡的衰减中起重要作用。
