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Numerical Study on Unstable Combustion: Combustion Instability and Combustion Noise

Numerical Study on Unstable Combustion: Combustion Instability and Combustion Noise
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Instability of Combustion

AIAA Journal, 1974
THE following equations governing the phenomenon of intrinsic instability of combustion, leading to low frequency oscillations in a rocket motor using a single liquid propellant, were derived and investigated by L. Crocco.
Ansari, JS
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On nonlinear combustion instability

33rd Joint Propulsion Conference and Exhibit, 1997
A crucial need in rocket motor development programs is a valid analytical/computational model of nonlinear combustion instability. The motor designer frequently must attempt to estimate not only the probability that a particular acoustic mode may "tend to grow," but what will be the amplitude of the oscillations if they are triggered in some way.
S. Malhotra, G. Flandro, S. Malhotra, G. Flandro   +3 more
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Mechanisms of combustion instability

Symposium (International) on Combustion, 1965
This paper presents results of a study aimed at understanding mechanisms involved in triggering, amplification, and suppression of acoustic waves, due to presence of flames. Experiments performed demonstrate that strong interactions between acoustic and flame oscillations can exist through flow oscillations, and that these interactions are due to ...
Tau-Yi Toong, Salant Richard F., Stopford John M., Anderson Griffin Y.   +3 more
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On the Hybrid Combustion Instability

Applied Mechanics and Materials, 2014
In the present paper, a combined method of large eddy simulations for non-premixed combustion in a turbulent flow coupled with proper orthogonal decomposition of instantaneous velocity, pressure and temperature fields is developed in order to identify the effect of coherent structure and to obtain a reduced order model for control model.
Sterian Danaila, Constantin Leventiu
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Wave instability in combustion

Computer Methods in Applied Mechanics and Engineering, 1991
Abstract This paper presents formulations and calculations involved in combustion instability analysis using finite element methods. Emphasized in the present study is the effect of chemical reactions upon unstable waves of all variables. It is also shown how nonlinear, nonisentropic, and flowfields influence the stability of combustion waves.
T.J. Chung, W.S. Yoon
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Incomplete combustion - A possible cause of combustion instability

AIAA Journal, 1983
The performance of and the combustion in solid-propellant rocket motors may be affected by characteristic length \((L^*)\). For small characteristic lengths, the chamber pressure and characteristic velocity may be lower than in similar motors with larger \(L^*\). Oscillatory combustion may take place if the \(L^*\) is small enough. In the past, \(L^*\)
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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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