Abstract
A detection method of lean blowout in a laboratory-scale premixed gas-turbine model combustor has been proposed from a view point of nonlinear dynamics. The translation error, which quantifies the degree of the parallelism of trajectories in the phase space constructed from the time-series data of the combustion-chamber pressure fluctuations, is used as a detector in this work. The dynamic behavior in the complex combustion instability close to lean blowout is successfully characterized by the translation error. The obtained results show that the translation error has a potential use for detecting the lean blowout in a lean premixed gas-turbine combustor.
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