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The Physics of Fluids, 2021
For annular combustors, the interactions between different modal structures (longitudinal, azimuthal spinning, standing, and slanted) remain a challenge in ongoing studies of thermoacoustic instabilities.
Yuanqi Fang +5 more
semanticscholar +1 more source
For annular combustors, the interactions between different modal structures (longitudinal, azimuthal spinning, standing, and slanted) remain a challenge in ongoing studies of thermoacoustic instabilities.
Yuanqi Fang +5 more
semanticscholar +1 more source
Thermoacoustic instability in solid media
The Journal of the Acoustical Society of America, 2018The exploration of thermoacoustic oscillations can be traced back to the 19th century when Sondhauss (1850) performed an experimental investigation that marked the birth of modern thermoacoustic research. Since then, several practical applications of the basic thermoacoustic effect were explored and ultimately led to the design of engineering devices ...
Haitian Hao +3 more
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Journal of Engineering For Gas Turbines and Power, 2022
The current study has experimentally investigated the thermoacoustic instability issue in an annular combustor with 16 oblique-injecting premixed swirling burners.
Yuanqi Fang, Gaofeng Wang, Zengyi Lyu
semanticscholar +1 more source
The current study has experimentally investigated the thermoacoustic instability issue in an annular combustor with 16 oblique-injecting premixed swirling burners.
Yuanqi Fang, Gaofeng Wang, Zengyi Lyu
semanticscholar +1 more source
Nonlinear saturation of thermoacoustic instability
The Journal of the Acoustical Society of America, 1999In earlier work [Watanabe et al., J. Acoust. Soc. Am. 102, 3484–3496 (1997)] a quasi-one-dimensional nonlinear model for thermoacoustic devices was developed. The model reduces exactly to the well-known Rott theory upon linearization, but numerical work has shown that it is also able to predict nonlinear features in agreement with experiment.
Sergey Karpov, Andrea Prosperetti
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Thermoacoustic instabilities: Modeling and control
IEEE Transactions on Control Systems Technology, 2003The goal of this study was twofold. First, modeling strategies were proposed to characterize the dynamics driving the thermoacoustic instabilities in a swirl-stabilized premixed burner. Second, this model was used to synthesize controllers in order to apply active control strategies to suppress this phenomenon.
D.U. Campos-Delgado +5 more
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Journal of Engineering For Gas Turbines and Power, 2022
Thermoacoustic instabilities are commonly encountered in the development of aeroengines and rocket motors. Research on the fundamental mechanism of thermoacoustic instabilities is beneficial for the optimal design of these engine systems.
Fangyan Li +4 more
semanticscholar +1 more source
Thermoacoustic instabilities are commonly encountered in the development of aeroengines and rocket motors. Research on the fundamental mechanism of thermoacoustic instabilities is beneficial for the optimal design of these engine systems.
Fangyan Li +4 more
semanticscholar +1 more source
The Physics of Fluids
This paper investigates the thermoacoustic stability of non-premixed flames in a tangential swirler combustion chamber. Thermoacoustic instabilities, characterized by intense pressure oscillations, pose significant challenges in the design and operation ...
Xiang Zhang, Suofang Wang, Yong Liu
semanticscholar +1 more source
This paper investigates the thermoacoustic stability of non-premixed flames in a tangential swirler combustion chamber. Thermoacoustic instabilities, characterized by intense pressure oscillations, pose significant challenges in the design and operation ...
Xiang Zhang, Suofang Wang, Yong Liu
semanticscholar +1 more source
Actively passive control of thermoacoustic instability
The Journal of the Acoustical Society of America, 2017In this work, experimental studies of actively passive control of perforated liner with a bias flow on mitigating thermoacoustic instability are performed. For this, a well-designed Rijke-type thermoacoustic combustor with a perforated liner implemented is designed. A premixed propane-fueled flame is confined in the bottom half.
Dan Zhao, Ashique Akram Tarique, Shen Li
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Journal of Fluid Mechanics
Self-sustained thermoacoustic oscillations as observed in low-emission combustion- involved gas turbines and aero-engines involve complicated thermal fluid–acoustics interaction and rich nonlinear dynamics.
Mingke Xie +5 more
semanticscholar +1 more source
Self-sustained thermoacoustic oscillations as observed in low-emission combustion- involved gas turbines and aero-engines involve complicated thermal fluid–acoustics interaction and rich nonlinear dynamics.
Mingke Xie +5 more
semanticscholar +1 more source
Hybrid Control for Thermoacoustic Instabilities
Dynamic Systems and Control: Volume 1, 2000Abstract The complex interactions between acoustics and unsteady combustion is the driving energy mechanism for transmuting self-excited pressure and velocity oscillations in combustion systems. These oscillations, known as thermoacoustic instabilities, can have adverse effects on system performance.
Wassim M. Haddad +2 more
openaire +1 more source