Results 211 to 220 of about 6,818 (260)

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
openaire   +1 more source

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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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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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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +2 more sources

An adaptive algorithm for control of combustion instability

Automatica, 2004
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Andrzej Banaszuk, Kartik B. Ariyur, Miroslav Krstic, Clas A. Jacobson   +3 more
openaire   +2 more sources

Instabilities in Gaseous Combustion

2015
By means of high-speed color cinematography, it was shown that the flames in lean Н2–air mixtures at an initial stage propagate symmetrically and the flame radius can be estimated from the frames of speed filming. It is shown that sufficiently strict calculation of cellular structure of the flame front of lean hydrogen mixtures requires consideration ...
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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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Parametric control of combustion thermo-acoustic instabilities

IEEE Transactions on Control Systems Technology, 2003
In this paper, a theoretical analysis and syntheses of a parametric controller for thermo-acoustic combustion instabilities in a liquid-fueled propulsion system is developed. A generalized wave equation describes the dynamic behavior of second order nonlinear oscillations.
Nidal Al-Masoud, Tarunraj Singh
openaire   +1 more source