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Complex system approach to investigate and mitigate thermoacoustic instability in turbulent combustors
Physics of Fluids ( IF 4.6 ) Pub Date : 2020-06-01 , DOI: 10.1063/5.0003702
R. I. Sujith 1 , Vishnu R. Unni 2
Affiliation  

Thermoacoustic instability in turbulent combustors is a nonlinear phenomenon resulting from the interaction between acoustics, hydrodynamics, and the unsteady flame. Over the years, there have been many attempts toward understanding, prognosis, and mitigation of thermoacoustic instabilities. Traditionally, a linear framework has been used to study thermoacoustic instability. In recent times, researchers have been focusing on the nonlinear dynamics related to the onset of thermoacoustic instability. In this context, the thermoacoustic system in a turbulent combustor is viewed as a complex system, and the dynamics exhibited by the system is perceived as emergent behaviors of this complex system. In this paper, we discuss these recent developments and their contributions toward the understanding of this complex phenomenon. Furthermore, we discuss various prognosis and mitigation strategies for thermoacoustic instability based on complex system theory.

中文翻译:

研究和减轻湍流燃烧室热声不稳定性的复杂系统方法

湍流燃烧器中的热声不稳定性是一种非线性现象,由声学、流体动力学和不稳定火焰之间的相互作用引起。多年来,人们在理解、预测和减轻热声不稳定性方面进行了许多尝试。传统上,线性框架已被用于研究热声不稳定性。最近,研究人员一直专注于与热声不稳定性发生相关的非线性动力学。在这种情况下,湍流燃烧器中的热声系统被视为一个复杂系统,系统表现出的动力学被视为这个复杂系统的紧急行为。在本文中,我们讨论了这些最新发展及其对理解这一复杂现象的贡献。此外,
更新日期:2020-06-01
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