Blowoff hysteresis, flame morphology and the effect of plasma in a swirling flow

This study focuses on the effect of a nanosecond pulsed plasma on flame stabilization in a model gas turbine dump combustor with an annular swirling flow. Contrary to the common belief that the lean blowoff limit is a single value at a given condition a hysteresis phenomenon on blowoff was observed, therefore the lean blowoff limit is not uniquely defined. This hysteresis phenomenon depends on the initial value of the equivalence ratio at which...