Flow and combustion control by surface arc discharge plasma actuation for flameholder.

According to the control mechanism of surface arc discharge plasma actuation on the flow and combustion of flameholder, the applicability of the phenomenological model of surface arc discharge is verified. And, the effects of different actuation positions and actuation intensities on the flow field structure, fuel atomization, ignition delay and flame stability in the flameholder are systematically analyzed. The results show that different actuation positions have a significant impact on the flow field structure, especially when the actuation energy is effectively concentrated and a strong actuation region is formed, which leads to the expansion of the recirculation zone, which in turn promotes fuel atomization, slows down the ignition delay and increases the average flame temperature. At the same time, with the increase of actuation intensity, the length of the recirculation zone, the mixing efficiency and the combustion efficiency increased linearly. [ABSTRACT FROM AUTHOR]