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Combustion Control and Symptom Detection on Self-excited Combustion Oscillation  

Yang Young-Joon (오사카대학교 대학원 기계물리공학과)
Publication Information
Journal of Advanced Marine Engineering and Technology / v.28, no.7, 2004 , pp. 1111-1122 More about this Journal
Abstract
An idea to suppress the self-excited combustion oscillation was applied to the flames. The characteristics of unsteady combustion were examined and the unsteady combustion was driven by forced pulsating mixture supply that can modulate its amplitude and frequency. The self-excited combustion oscillation having weaker flow velocity fluctuation intensity than that of the forced pulsating supply can be suppressed by this method. The effects of the forced pulsation amplitude and frequency on controlling self-excited combustion oscillations were also investigated comparing with the steady mixture supply. The unsteady combustion used in this experiment plays an important role in controlling self-excited combustion oscillation. Symptoms of self-excited combustion oscillation were also studied in order to predict the onset of combustion oscillation before it proceeded to a catastrophic failure For the purpose, the unique measures to observe the onset of self-excited combustion oscillations based on the careful statistics of fluctuating properties in flames, such as pressure or emission of OH radicals, have been proposed.
Keywords
Combustion Oscillation; Combustion Control; Symptom of Combustion Oscillation; Detection; Unsteady Combustion;
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