Trends in recurrence analysis of dynamical systems

N Marwan, KH Kraemer - The European Physical Journal Special Topics, 2023 - Springer
The last decade has witnessed a number of important and exciting developments that had
been achieved for improving recurrence plot-based data analysis and to widen its …

Rijke tube: A nonlinear oscillator

K Manoj, SA Pawar, J Kurths, RI Sujith - Chaos: An Interdisciplinary …, 2022 - pubs.aip.org
Dynamical systems theory has emerged as an interdisciplinary area of research to
characterize the complex dynamical transitions in real-world systems. Various nonlinear …

Coupled interaction between acoustics and unsteady flame dynamics during the transition to thermoacoustic instability in a multi-element rocket combustor

P Kasthuri, SA Pawar, R Gejji, W Anderson… - Combustion and …, 2022 - Elsevier
Rocket engine combustors are prone to transverse instabilities that are characterized by
large amplitude high frequency oscillations in the acoustic pressure and the heat release …

Suppression of thermoacoustic instability by targeting the hubs of the turbulent networks in a bluff body stabilized combustor

A Krishnan, RI Sujith, N Marwan… - Journal of Fluid …, 2021 - cambridge.org
In the present study, we quantify the vorticity interactions in a bluff body stabilized turbulent
combustor during the transition from combustion noise to thermoacoustic instability via …

A complex networks based approach to nonlinear aeroelasticity

HS Varun, MS Aswathy, S Sarkar - Journal of Fluids and Structures, 2023 - Elsevier
The present study investigates the effect of low intensity additive noise on a subcritical pitch-
plunge aeroelastic system through the lens of complex networks. In the deterministic system …

[HTML][HTML] Investigation into the coherence of flame intensity oscillations in a model multi-element rocket combustor using complex networks

P Kasthuri, A Krishnan, R Gejji, W Anderson… - Physics of …, 2022 - pubs.aip.org
Capturing the complex spatiotemporal flame dynamics inside a rocket combustor is
essential to validate high-fidelity simulations for developing high-performance rocket …

Recurrence-based synchronization analysis of weakly coupled bursting neurons under external ELF fields

AM Nkomidio, EK Ngamga, BRN Nbendjo, J Kurths… - Entropy, 2022 - mdpi.com
We investigate the response characteristics of a two-dimensional neuron model exposed to
an externally applied extremely low frequency (ELF) sinusoidal electric field and the …

Slow-fast dynamics in non-linear enzyme cascades gives rise to spatial multiscaling.

AM Shibeko, MA Panteleev - Chaos, Solitons & Fractals, 2024 - Elsevier
Slow-fast dynamics in a well-mixed biological system is known to be associated with
functional modularity with temporal hierarchy of processes. Yet, the significance of slow-fast …

Feedback directions governing self-sustained thermoacoustic instability in rocket engine combustors

S De, P Kasthuri, ME Harvazinski, R Gejji… - Physics of …, 2024 - pubs.aip.org
The occurrence of high-frequency (> 1000 Hz) thermoacoustic instability (TAI) sustained by
mutual feedback among the acoustic field, heat release rate oscillations, and hydrodynamic …

Recurrence-based reconstruction of dynamic pricing attractors

S Lu, S Oberst - Nonlinear Dynamics, 2023 - Springer
Dynamic pricing depends on the understanding of uncertain demand. We ask the question
whether a stochastic system is sufficient to model this uncertainty. We propose a novel …