Results 241 to 250 of about 27,111 (282)

Numerical Study on Unstable Combustion: Combustion Instability and Combustion Noise

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

Some of the next articles are maybe not open access.

Related searches:

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
openaire   +1 more source

Combustion instability additive investigation

35th Joint Propulsion Conference and Exhibit, 1999
Combustion stability additives like zirconium carbide (ZrC), aluminum oxide (AO o is the angular frequency, ro is the particle relaxation time:
Fred Blomshield, Richard Stalnaker, Merrill Beckstead   +2 more
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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.
openaire   +1 more source

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.
openaire   +3 more sources

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, \(L^*\)
openaire   +1 more source

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
openaire   +1 more source