Volume 128, Number 5, December 2019
|Number of page(s)||6|
|Section||Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics|
|Published online||04 February 2020|
Strange nonchaos in self-excited singing flames
1 Indian Institute of Technology Madras - Chennai 600 036, India
2 Indian Institute of Technology Ropar - Rupnagar, Punjab 140 001, India
Received: 14 October 2019
Accepted: 16 December 2019
We report the first experimental evidence of a strange nonchaotic attractor (SNA) in the natural dynamics of a self-excited laboratory-scale system. In the previous experimental studies, the birth of a SNA was observed in quasiperiodically forced systems; however, such evidence of a SNA in an autonomous laboratory system is yet to be reported. We discover the presence of a SNA between the attractors of quasiperiodicity and chaos through a fractalization route in a laboratory thermoacoustic system. The observed dynamical transitions from order to chaos via a SNA is confirmed through various nonlinear characterization methods prescribed for the detection of a SNA.
PACS: 43.28.Kt – Aerothermoacoustics and combustion acoustics / 05.45.-a – Nonlinear dynamics and chaos / 47.10.Fg – Dynamical systems methods
© EPLA, 2020
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