Department of Mechanical Engineering, Ritsumeikan University, Kusatsu-shi, Shiga 525-8577, Japan.
Chaos. 2011 Mar;21(1):013124. doi: 10.1063/1.3563577.
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.
我们从非线性动力学的角度实验研究了贫预混燃气轮机燃烧室燃烧不稳定性的动态行为。非线性时间序列分析与替代数据方法的结合，清楚地表明，随着当量比的增加，燃烧不稳定性的动态行为从随机波动通过低维混沌振荡到周期性振荡经历了显著的转变。我们还表明，非线性预测方法可用于预测贫预混燃气轮机燃烧室燃烧不稳定性的短期动态行为，这在燃烧科学和物理学领域尚未得到解决。
