Nonlinear dynamics of a swirl-stabilized combustor under acoustic excitations: Influence of the excited combustor natural mode oscillations

Z Rao, R Li, B Zhang, B Wang, D Zhao… - Flow, Turbulence and …, 2021 - Springer
In this study, experimental measurements are performed on a swirl-stabilized combustor to
study the nonlinear combustor dynamic characteristics under acoustic excitations. The …

Experimental study of the beating behavior of thermoacoustic self-excited instabilities in dual swirl combustors

J Kim, M Jang, K Lee, AR Masri - Experimental Thermal and Fluid Science, 2019 - Elsevier
The main objective of this work was to investigate the beating behavior of acoustically self-
excited instabilities in dual swirl combustors. This was achieved by measuring fluctuations in …

Characterizing nonlinear interaction between a premixed swirling flame and acoustics: Heat-driven acoustic mode switching and triggering

G Wu, ZL Lu, Y Guan, Y Li, CZ Ji - Energy, 2018 - Elsevier
The aim of this present study is to examine the critical role of air-fuel equivalence ratio Ф and
air flow rate on triggering self-excited thermoacoustic oscillations in a swirling combustor …

Combustion instability analysis on a partially premixed swirl combustor by thermoacoustic experiments and modeling

R Zhu, D Pan, C Ji, T Zhu, P Lu, H Gao - Energy, 2020 - Elsevier
The combustion instability of a partially premixed swirl burner is investigated by
experimental tests and numerical modeling. The experimental results show that the …

Temporal and spatiotemporal analyses of synchronization transition in a swirl-stabilized combustor

SA Pawar, S Mondal, NB George, RI Sujith - AIAA Journal, 2019 - arc.aiaa.org
The coupled behavior of the acoustic pressure and the heat release rate fluctuations is
studied in a swirl-stabilized combustor during the transition of system dynamics from …

Experimental study of equivalence ratio and fuel flow rate effects on nonlinear thermoacoustic instability in a swirl combustor

H Zhao, G Li, D Zhao, Z Zhang, D Sun, W Yang, S Li… - Applied Energy, 2017 - Elsevier
Industrial combustion systems such as power generation gas turbines, rocket motors,
furnaces and boilers often face the problem of large-amplitude self-excited pressure …

Acoustic Triggering of Combustion Instability in a Swirling Flame: An Experimental Study

Y Liu, Y Yan, S Shang, H Ma - Energies, 2023 - mdpi.com
Combustion instability is a common thermoacoustic coupling problem in combustion
systems, and the pressure oscillations generated inevitably damage the combustion system …

Contributions of hydrodynamic features of a swirling flow to thermoacoustic instabilities in a lean premixed swirl stabilized combustor

B Zhang, M Shahsavari, Z Rao, S Yang, B Wang - Physics of Fluids, 2019 - pubs.aip.org
A comprehensive study on influences of hydrodynamic features of a swirling flow on
thermoacoustic instabilities in a swirl stabilized combustor is performed by using large eddy …

Transitions of thermoacoustic modes and flame dynamics in a centrally-staged swirl combustor

X Wang, X Han, CJ Sung - Energy, 2023 - Elsevier
In the start-up process of practical gas turbine applications, the modulation of operating
condition, especially the variation of global equivalence ratios (ϕ glo), could cause the …

Investigation on the intrinsic thermoacoustic instability of a lean-premixed swirl combustor with an acoustic liner

L Xu, J Zheng, G Wang, Z Feng, X Tian, L Li… - Proceedings of the …, 2021 - Elsevier
In the present work, the combustion instability of a premixed swirl combustor was
experimentally and theoretically investigated. Results show that both intrinsic …