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.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Combustion Instability Theory


    Beteiligte:
    Cheng, Sin-I (Autor:in)


    Erscheinungsdatum :

    01.01.1968


    Format / Umfang :

    19 pages





    Medientyp :

    Aufsatz/Kapitel (Buch)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Interpretation of L combustion instability in terms of acoustic instability theory

    Coates, R.L. / Cohen, N.S. / Harvill, L.R. | Engineering Index Backfile | 1967


    Combustion instability

    Natanzon, Miron S. ;Natanzon, Miron Semenovič ;Culick, F. E. C. | SLUB | 2008




    Rocket combustion instability.

    Sokolowski, D. E. | NTRS | 1967