Investigation of self-induced thermoacoustic instabilities in gas turbine combustors

SS Rashwan, A Mohany, I Dincer - Energy, 2020 - Elsevier
The self-induced thermoacoustic instabilities in partially premixed combustors remain a
significant challenge which has received a limited research attention. This numerical work …

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 …

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 …

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 …

Prediction of pressure amplitudes of self-excited thermoacoustic instabilities for a partially premixed swirl-flame

B Ćosić, JP Moeck… - … Expo: Power for …, 2013 - asmedigitalcollection.asme.org
The prediction of the limit-cycle amplitude of thermoacoustically unstable practical gas
turbine combustion systems remains a challenge for the gas turbine industry. The present …

Scale Adaptive Simulation of a thermoacoustic instability in a partially premixed lean swirl combustor

JM Lourier, M Stöhr, B Noll, S Werner, A Fiolitakis - Combustion and Flame, 2017 - Elsevier
The thermoacoustic oscillation of a turbulent, swirl-stabilized, partially premixed flame in the
PRECCINSTA gas turbine model combustor is analyzed by means of a Scale Adaptive …

Effects of the fresh mixture temperature on thermoacoustic instabilities in a lean premixed swirl-stabilized combustor

B Zhang, M Shahsavari, Z Rao, R Li, S Yang… - Physics of …, 2020 - pubs.aip.org
This numerical study investigated the effects of the fresh mixture temperature on
thermoacoustic instabilities in a lean premixed swirl-stabilized combustion chamber by …

Assessment of thermoacoustic instabilities in a partially premixed model combustor using URANS approach

M Shahi, JBW Kok, JCR Casado, AK Pozarlik - Applied thermal engineering, 2014 - Elsevier
The paper presents a numerical study of the mechanisms driving thermoacoustic instabilities
in a lean partially premixed combustor in conditions representative of gas turbine …

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 …

Thermoacoustic spectrum of a swirled premixed combustor with partially reflecting boundaries

KJ Yong, M Meindl, W Polifke… - … of Engineering for …, 2020 - asmedigitalcollection.asme.org
This study investigates the effect of partial acoustic reflection at inlet or outlet of a combustor
on thermoacoustic stability. Parametric maps of the thermoacoustic spectrum are utilized for …