Results 111 to 120 of about 175 (164)

Condensed Matter Systems Exposed to Radiation: Multiscale Theory, Simulations, and Experiment. [PDF]

Chem Rev
Solov'yov AV, Verkhovtsev AV, Mason NJ, Amos RA, Bald I, Baldacchino G, Dromey B, Falk M, Fedor J, Gerhards L, Hausmann M, Hildenbrand G, Hrabovský M, Kadlec S, Kočišek J, Lépine F, Ming S, Nisbet A, Ricketts K, Sala L, Schlathölter T, Wheatley AEH, Solov'yov IA.   +22 more
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Intrinsic thermoacoustic instabilities

Progress in Energy and Combustion Science, 2023
Camilo Silva
exaly   +2 more sources

Thermoacoustic instabilities: Modeling and control

IEEE Transactions on Control Systems Technology, 2003
The 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, Bruno B. H. Schuermans, Kemin Zhou, Christian Oliver Paschereit, Eduardo Gallestey, Andreas Poncet   +5 more
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Adaptive control for thermoacoustic combustion instabilities

Proceedings of the 2001 American Control Conference. (Cat. No.01CH37148), 2001
Thermoacoustic 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, Tomohisa Hayakawa, Wassim M. Haddad 0001   +2 more
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Thermoacoustic instability in solid media

The Journal of the Acoustical Society of America, 2018
The 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, Carlo Scalo, Mihir Sen, Fabio Semperlotti   +3 more
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Nonlinear saturation of the thermoacoustic instability

The Journal of the Acoustical Society of America, 2000
A 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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Thermoacoustic Sources and Instabilities

1992
Thermoacoustics 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, A. P. Dowling, J. E. Ffowcs Williams, M. Heckl, F. G. Leppington   +4 more
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Thermoacoustic instability of a plasma

Soviet Physics Journal, 1988
The 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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Nonlinear saturation of thermoacoustic instability

The Journal of the Acoustical Society of America, 1999
In 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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