Active control of combustion oscillations for premixed combustion systems

Abstract
Methane premixed flame is studied extensively using a swirl burner and a swirl combustion chamber. First the fundamental study for the flame properties is performed for the swirl burner. Flame configuration is analyzed by a high speed photography and Schlieren system. Then a control system is set up using MATLAB, Simulink, PPC Controller board, dSPACE, and an actuator. Two control systems are applied in the present study; one by using a mass flow control system and another by using a speaker. In the mass flow system the premixed flame is controlled by the certain threshold. In the speaker system the premixed flame is controlled on and off arbitrary using the sensor and actuator. A half frequency of the primary frequency of noise is detected to be eigen value, but is investigated where this frequency comes from. The present systems are open loop system and closed system will be established soon.