Abstract Temporal variations in a combustion system are always present and take varieties of forms and intensity under different environments. A system is stable if a disturbance introduced into the system decreases in amplitude with time and eventually becomes lost in the random fluctuations prevailing in the system. A system is unstable if the amplitude increases with time. If an unstable combustion system is weakly coupled with the environment, a new equilibrium state of combustion will be reached without modifying the surroundings appreciably. A good example of this is the transition of a flame in open atmosphere from the laminar to the turbulent state. The instability of small disturbances (often referred to as Tollmien-Schlichting waves) is an inherent property of the flow of the combustible mixture. The unstable oscillations are present in a broad band rather than a few selected frequencies. The instability of such weakly coupled systems is of considerable scientific interest but does not possess direct relation with the instability of combustion in a rocket motor where the combustion is strongly coupled to its environment.
Combustion Instability Theory
Jet, Rocket, Nuclear, Ion and Electric Propulsion ; 6 ; 599-617
Applied Physics and Engineering ; 7 , 6
01.01.1968
19 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
Interpretation of L combustion instability in terms of acoustic instability theory
Engineering Index Backfile | 1967
|SLUB | 2008
|Rocket combustion instability.
NTRS | 1967
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