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pro vyhledávání: '"Sujith, R. I"'
The transition from a chaotic to a periodic oscillatory state can be smooth or abrupt in real-world turbulent systems. Although there have been several mathematical studies, the occurrence of abrupt transitions in real-world systems such as turbulent
Externí odkaz:
http://arxiv.org/abs/2409.14203
Autor:
Thonti, Beeraiah, Sudarsanan, Sivakumar, Bhavi, Ramesh S., Bhaskaran, Anaswara, Raghunathan, Manikandan, Sujith, R. I.
The emergence of periodic oscillations is observed in various complex systems in nature and engineering. Thermoacoustic oscillations in systems comprising turbulent reactive flow exemplify such complexity in the engineering context, where the emergen
Externí odkaz:
http://arxiv.org/abs/2409.13044
We discover strange nonchaotic attractor (SNA) through experiments in an unforced system comprising turbulent reactive flow. While models suggest SNAs are common in dynamical systems, experimental observations are primarily limited to systems with ex
Externí odkaz:
http://arxiv.org/abs/2408.01131
Early warning signals (EWSs) forewarn a sudden transition (or tipping) from a desirable state to an undesirable state. However, we observe that EWSs detect an impending tipping past bifurcation points when control parameters are varied fast; this que
Externí odkaz:
http://arxiv.org/abs/2408.07296
Autor:
Tandon, Shruti, Balaji, Aswin, Radhakrishnan, Rohit, Raghunathan, Manikandan, Chopra, Gaurav, Sujith, R. I.
We investigate flame-acoustic interactions in a turbulent combustor during the state of intermittency before the onset of thermoacoustic instability using complex networks. Experiments are performed in a turbulent bluff-body stabilized dump combustor
Externí odkaz:
http://arxiv.org/abs/2407.19729
Autor:
De, Somnath, Kasthuri, Praveen, Harvazinski, Matthew E., Gejji, Rohan, Anderson, William, Sujith, R. I.
The occurrence of high frequency (>1000 Hz) thermoacoustic instability (TAI) sustained by mutual feedback among the acoustic field, heat release rate oscillations, and hydrodynamic oscillations poses severe challenges to the operation and structural
Externí odkaz:
http://arxiv.org/abs/2407.07803
Autor:
Bhavi, Ramesh S., Sudarsanan, Sivakumar, Raghunathan, Manikandan, Bhaskaran, Anaswara, Sujith, R. I.
A sudden transition to a state of high amplitude limit cycle oscillations is catastrophic in a thermo-fluid system. Conventionally, upon varying the control parameter, a sudden transition is observed as an abrupt jump in the amplitude of the fluctuat
Externí odkaz:
http://arxiv.org/abs/2406.08599
Autor:
Dhadphale, Jayesh M., Kraemer, K. Hauke, Gelbrecht, Maximilian, Kurths, Jürgen, Marwan, Norbert, Sujith, R. I.
Phase space reconstruction (PSR) methods allow for the analysis of low-dimensional data with methods from dynamical system theory, but their application to prediction models, like those from machine learning (ML), is limited. Therefore, we present he
Externí odkaz:
http://arxiv.org/abs/2312.14189
This study examines the interplay between acoustic pressure oscillations and interactions between regions of intense vorticity in the reactive field of a turbulent combustor. These regions of intense vortical interactions are identified as vortical c
Externí odkaz:
http://arxiv.org/abs/2311.12541