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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.
Daniel U. Campos-Delgado +5 more
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Adaptive control for thermoacoustic combustion instabilities
Proceedings of the 2001 American Control Conference. (Cat. No.01CH37148), 2001Thermoacoustic instabilities in combustion processes involve pressure and velocity limit cycling oscillations that can have adverse effects on system performance. Using a nonlinear state space model for combustion processes that captures the coupling between unsteady combustion and acoustics, a direct adaptive control framework is used to design high ...
Natasa A. Kablar +2 more
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Thermoacoustic Sources and Instabilities
1992Thermoacoustics deals with the acoustics of flows in which the variation of entropy plays a significant role. A range of processes are thermoacoustic sources. For example, unsteady combustion, diffusion of heat and mass and turbulent two-phase flows all generate sound.
D. G. Crighton +4 more
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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 instability of a plasma
Soviet Physics Journal, 1988The possibility of the onset of a self-excited instability in a high-temperature plasma as a result of energy released in thermonuclear interactions between ions is discussed, and the resulting instability conditions are used to investigate the behavior of a linear pinch.
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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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Nonlinear saturation of the thermoacoustic instability
The Journal of the Acoustical Society of America, 2000A weakly nonlinear theory of the thermoacoustic instability in gas-filled tubes is developed in the time domain by exploiting the difference between the instability time scale and the period of standing waves. By carrying the expansion to fourth order in the perturbation parameter, explicit results for the initial growth, nonlinear evolution, and final
Karpov, S., Prosperetti, A.
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Model refinement for the active control of thermoacoustic instability
IEEE Conference on Decision and Control and European Control Conference, 2011Active control has been shown as a feasible technology for suppressing thermoacoustic instability in continuous combustion systems, and the control strategy design is substantially dependent on the reliability of the flame model. In this paper, refinement of G-equation flame model for the dynamics of lean premixed combustion is investigated. Precisely,
Xiaochuan Yuan, Keith Glover
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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
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Identification of a model for thermoacoustic instabilities in a Rijke tube
IEEE Transactions on Control Systems Technology, 2002In a large class of processes characterized by the presence of a heating source placed in a finite volume, the interaction between the flow field and the heat release mechanism can lead to unsteady fluctuations, known as thermoacoustic instabilities.
Sergio Bittanti +3 more
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