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 …

Coupling heat transfer and large eddy simulation for combustion instability prediction in a swirl burner

C Kraus, L Selle, T Poinsot - Combustion and Flame, 2018 - Elsevier
Large eddy simulations (LES) of combustion instabilities are often performed with simplified
thermal wall boundary conditions, typically adiabatic walls. However, wall temperatures …

Nonlinear instability analysis for partially premixed swirl flames

B Ćosić, JP Moeck, CO Paschereit - Combustion Science and …, 2014 - Taylor & Francis
Limit-cycle prediction of thermoacoustic instabilities for unstable practical gas turbine
combustion systems is still a challenge for the gas turbine industry. The nonlinear stability …

Thermoacoustic instability drivers and mode transitions in a lean premixed methane-air combustor at various swirl intensities

B Zhang, M Shahsavari, Z Rao, S Yang… - Proceedings of the …, 2021 - Elsevier
In this study, an in-house developed fully compressible solver utilizing high-order numerical
discretization schemes is used to study the effects of swirl intensity on thermoacoustic …

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 …

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 …

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 …

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 …

Interaction between velocity fluctuations and equivalence ratio fluctuations during thermoacoustic oscillations in a partially premixed swirl combustor

M Stöhr, Z Yin, W Meier - Proceedings of the Combustion Institute, 2017 - Elsevier
The combined effects of velocity fluctuations (VF) and equivalence ratio fluctuations (ERF)
on thermoacoustic flame oscillations are studied experimentally in a gas turbine model …

[HTML][HTML] Azimuthally-driven subharmonic thermoacoustic instabilities in a swirl-stabilised combustor

D Noh, E Karlis, S Navarro-Martinez… - Proceedings of the …, 2019 - Elsevier
A joint experimental and computational study of thermoacoustic instabilities in a model swirl-
stabilised combustor is presented. This paper aims to deliver a better characterisation of …