Results 261 to 270 of about 4,115 (308)

Instability of combustion and detonation of gases

Uspekhi Fizicheskih Nauk, 1965
CONTENTS 1. Normal combustion of gases 780 2. The instability of normal combustion 781 3. Detonation 785 4. The instability of planar gas detonation with respect to the combustion front 789 5. One-dimensional instability of detonation 790 6. Pulsating detonation 792 7.
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Combustion wave instability in the filtration combustion of gases

Combustion, Explosion and Shock Waves, 1994
Theoretical and experimental approaches to the problem of combustion wave stability in gas filtration combustion are described. An approximate criterion of instability for an initially plane combustion wave front is suggested within the framework of a hydrodynamic model.
S. S. Minaev, S. I. Potytnyakov, V. S. Babkin   +2 more
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Asymptotic approach to combustion instability

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2005
This paper presents an asymptotic approach to combustion instability in premixed flames under the assumptions of large activation energy and small Mach number. The entire flow consists of four distinct yet fully interactive sub-regions, which accommodate the chemical reaction, heat transport, hydrodynamics and acoustics, respectively.
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Propellant Combustion Instability as Measured by Combustion Recoil

AIAA Journal, 1972
11 Moore, C. B., "Vibration-Rotation Energy Transfer," Journal of Chemical Physics, Vol. 43, No. 9, Nov. 1965, p. 2979. 12 Shin, H. K., "Deexcitation of Molecular Vibration on Collisions: Vibration-tp-Rotation Energy "transfer in Hydrogen Halides," Journal of Physical Chemistry, Vol. 75, No. 8, Aug. 1971, p. 1079. 12 Shin, H.
C.M. MIHLFEITH, A.D. BAER, N.W. RYAN
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Minimax controller design for combustion instabilities

Proceedings of the 2003 American Control Conference, 2003., 2004
A robust feedback controller for combustion thermoacoustics instabilities is presented in this paper. To address the issue of the system's parameter uncertainties, the minimax principles based controller is used. The minimax corresponds to finding the best controller for the worst parameter deviation.
Nidal Al-Masoud, Tarunraj Singh
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An analytically tractable model for combustion instability

Proceedings of the 44th IEEE Conference on Decision and Control, 2006
A system of two coupled Van der Pol equations is considered as a model for combustion instability. This system is analyzed using the Krylov-Bogoliubov method. The results of the analysis are compared with simulation results and with data obtained from a combustion system.
Fethi Bouziani, Ioan Doré Landau, Alina Voda Besançon, Robert R. Bitmead   +3 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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Fingering instability in combustion: An extended view

Physical Review E, 1999
We detail the experimental situation concerning the fingering instability that occurs when a solid fuel is forced to burn against a horizontal oxidizing wind. The instability appears when the Rayleigh number for convection is below criticality. The focus is on the developed fingering state.
O, Zik, E, Moses
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An adaptive algorithm for control of combustion instability

Automatica, 2004
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Andrzej Banaszuk, Kartik B. Ariyur, Miroslav Krstic, Clas A. Jacobson   +3 more
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Model-based control of combustion instabilities

Journal of Sound and Vibration, 2005
Model-based control has been successfully implemented on an atmospheric pressure lean premixed combustion rig. The rig incorporated a pressure transducer in the combustor to provide a sensor measurement, with actuation provided by a fuel valve. Controller design was based on experimental measurement of the open loop transfer function. This was achieved
Aimee S. Morgans, Ann P. Dowling
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