Strange Nonchaotic Attractor in a Self-organized Turbulent Reactive Flow System

Strange nonchaotic attractor (SNA) is an exotic state typically observed in dynamical systems subjected to external quasiperiodic or periodic forcing. In this study, we discover the state of SNA in a self-organized turbulent reactive flow system. We observe the state of SNA prior to the emergence of periodic oscillations. We use the 0-1 test and correlation dimension analysis to characterize this state, followed by a singular continuous spectrum to confirm its classification as SNA. The system is inherently complex, and a state of chaos is expected owing to its nonlinearity. Order emerges due to self-organization. However, the emergence of SNA is nonintuitive.