[HTML][HTML] Complex system approach to investigate and mitigate thermoacoustic instability in turbulent combustors

RI Sujith, VR Unni - Physics of Fluids, 2020 - pubs.aip.org
Thermoacoustic instability in turbulent combustors is a nonlinear phenomenon resulting
from the interaction between acoustics, hydrodynamics, and the unsteady flame. Over the …

Characterizing nonlinear dynamic features of self-sustained thermoacoustic oscillations in a premixed swirling combustor

Y Sun, Z Rao, D Zhao, B Wang, D Sun, X Sun - Applied Energy, 2020 - Elsevier
To meet stringent NO x emission requirements, lean premixed swirling combustion
technology is widely applied in power generation and propulsion systems. However, such …

[HTML][HTML] Unsteady ultra-lean combustion of methane and biogas in a porous burner–An experimental study

R Habib, B Yadollahi, A Saeed… - Applied Thermal …, 2021 - Elsevier
The response of ultra-lean flames, stabilised in a porous burner, to the fluctuations imposed
on the fuel flow rate is investigated experimentally. The study is motivated by the likelihood …

Synchronization and chimeras in a network of four ring-coupled thermoacoustic oscillators

Y Guan, K Moon, KT Kim, LKB Li - Journal of Fluid Mechanics, 2022 - cambridge.org
We take a complex systems approach to investigating experimentally the collective
dynamics of a network of four self-excited thermoacoustic oscillators coupled in a ring. Using …

Spatiotemporal dynamics and early detection of thermoacoustic combustion instability in a model rocket combustor

T Hashimoto, H Shibuya, H Gotoda, Y Ohmichi… - Physical Review E, 2019 - APS
We numerically study the spatiotemporal dynamics and early detection of thermoacoustic
combustion instability in a model rocket combustor using the theories of complex networks …

Experimental investigation of combustion instability in a centrally staged combustor under self-excited oscillation conditions

J Ma, M Han, X Han, X Hui, X Xue - Physics of Fluids, 2023 - pubs.aip.org
This paper presents an experimental investigation of combustion instability and flame
dynamics in a laboratory-scale lean premixed prevaporized centrally staged combustor …

Methods of nonlinear time series analysis and applications: A review

G Ambika, KP Harikrishnan - Dynamics and Control of Energy Systems, 2020 - Springer
Many of the real world systems are highly complex with little or no apriori information about
the underlying dynamics. We have to depend mostly on measurements or observations of …

Numerical investigation of the effects of swirling hot co-flow on MILD combustion of a hydrogen–methane blend

SM Mousavi, R Kamali… - Journal of …, 2020 - asmedigitalcollection.asme.org
This paper examines the effects of swirl hot co-flow on the combustion behavior of a
moderate or intense low oxygen dilution (MILD) burner fueled by a mixture of methane and …

Characterization and detection of thermoacoustic combustion oscillations based on statistical complexity and complex-network theory

S Murayama, H Kinugawa, IT Tokuda, H Gotoda - Physical Review E, 2018 - APS
We present an experimental study on the characterization of dynamic behavior of flow
velocity field during thermoacoustic combustion oscillations in a turbulent confined …

[HTML][HTML] Comparative study of chaotic features in hourly wind speed using recurrence quantification analysis

AE Adeniji, OI Olusola, AN Njah - AIP Advances, 2018 - pubs.aip.org
Due to the shortage in electricity supply in Nigeria, there is a need to improve the alternative
power generation from wind energy by analysing the wind speed data available in some …