title: Dynamic properties of combustion instability in a lean premixed gas-turbine combustor.
abstract: We experimentally investigate the dynamic behavior of the combustion instability in a lean premixed gas-turbine combustor from the viewpoint of nonlinear dynamics. A nonlinear time series analysis in combination with a surrogate data method clearly reveals that as the equivalence ratio increases, the dynamic behavior of the combustion instability undergoes a significant transition from stochastic fluctuation to periodic oscillation through low-dimensional chaotic oscillation. We also show that a nonlinear forecasting method is useful for predicting the short-term dynamic behavior of the combustion instability in a lean premixed gas-turbine combustor, which has not been addressed in the fields of combustion science and physics.
authors: Department of Mechanical Engineering, Ritsumeikan University, Kusatsu-shi, Shiga 525-8577, Japan. gotoda@se.ritsumei.ac.jp
authors: Hiroshi
authors: H
authors: Gotoda
authors: Hiroyuki
authors: H
authors: Nikimoto
authors: Takaya
authors: T
authors: Miyano
authors: Shigeru
authors: S
authors: Tachibana